diff --git a/api/events/task.pb.go b/api/events/task.pb.go
index 38cce07bb..2b2fa633c 100644
--- a/api/events/task.pb.go
+++ b/api/events/task.pb.go
@@ -9,21 +9,18 @@ import (
 	_ "github.com/containerd/containerd/protobuf/plugin"
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
-	_ "github.com/gogo/protobuf/types"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
+	types1 "github.com/gogo/protobuf/types"
 	io "io"
 	math "math"
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -116,10 +113,10 @@ func (m *TaskStart) XXX_DiscardUnknown() {
 var xxx_messageInfo_TaskStart proto.InternalMessageInfo
 
 type TaskDelete struct {
-	ContainerID string    `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	Pid         uint32    `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"`
-	ExitStatus  uint32    `protobuf:"varint,3,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt    time.Time `protobuf:"bytes,4,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
+	ContainerID string            `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	Pid         uint32            `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"`
+	ExitStatus  uint32            `protobuf:"varint,3,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt    *types1.Timestamp `protobuf:"bytes,4,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
 	// id is the specific exec. By default if omitted will be `""` thus matches
 	// the init exec of the task matching `container_id`.
 	ID                   string   `protobuf:"bytes,5,opt,name=id,proto3" json:"id,omitempty"`
@@ -203,14 +200,14 @@ func (m *TaskIO) XXX_DiscardUnknown() {
 var xxx_messageInfo_TaskIO proto.InternalMessageInfo
 
 type TaskExit struct {
-	ContainerID          string    `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	ID                   string    `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
-	Pid                  uint32    `protobuf:"varint,3,opt,name=pid,proto3" json:"pid,omitempty"`
-	ExitStatus           uint32    `protobuf:"varint,4,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt             time.Time `protobuf:"bytes,5,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	ContainerID          string            `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	ID                   string            `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
+	Pid                  uint32            `protobuf:"varint,3,opt,name=pid,proto3" json:"pid,omitempty"`
+	ExitStatus           uint32            `protobuf:"varint,4,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt             *types1.Timestamp `protobuf:"bytes,5,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
 }
 
 func (m *TaskExit) Reset()      { *m = TaskExit{} }
@@ -502,47 +499,47 @@ func init() {
 }
 
 var fileDescriptor_8db0813f7adfb63c = []byte{
-	// 639 bytes of a gzipped FileDescriptorProto
+	// 629 bytes of a gzipped FileDescriptorProto
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+	0xcc, 0xa6, 0x06, 0x00, 0x00,
 }
 
 // Field returns the value for the given fieldpath as a string, if defined.
@@ -889,14 +886,18 @@ func (m *TaskDelete) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x2a
 	}
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err2 != nil {
-		return 0, err2
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTask(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x22
 	}
-	i -= n2
-	i = encodeVarintTask(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0x22
 	if m.ExitStatus != 0 {
 		i = encodeVarintTask(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -999,14 +1000,18 @@ func (m *TaskExit) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	n3, err3 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err3 != nil {
-		return 0, err3
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTask(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x2a
 	}
-	i -= n3
-	i = encodeVarintTask(dAtA, i, uint64(n3))
-	i--
-	dAtA[i] = 0x2a
 	if m.ExitStatus != 0 {
 		i = encodeVarintTask(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -1347,8 +1352,10 @@ func (m *TaskDelete) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovTask(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovTask(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovTask(uint64(l))
+	}
 	l = len(m.ID)
 	if l > 0 {
 		n += 1 + l + sovTask(uint64(l))
@@ -1406,8 +1413,10 @@ func (m *TaskExit) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovTask(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovTask(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovTask(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -1572,7 +1581,7 @@ func (this *TaskDelete) String() string {
 		`ContainerID:` + fmt.Sprintf("%v", this.ContainerID) + `,`,
 		`Pid:` + fmt.Sprintf("%v", this.Pid) + `,`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
@@ -1602,7 +1611,7 @@ func (this *TaskExit) String() string {
 		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
 		`Pid:` + fmt.Sprintf("%v", this.Pid) + `,`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
@@ -2152,7 +2161,10 @@ func (m *TaskDelete) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types1.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -2537,7 +2549,10 @@ func (m *TaskExit) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types1.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/events/task.proto b/api/events/task.proto
index a88b473eb..205b2beca 100644
--- a/api/events/task.proto
+++ b/api/events/task.proto
@@ -44,7 +44,7 @@ message TaskDelete {
 	string container_id = 1;
 	uint32 pid = 2;
 	uint32 exit_status = 3;
-	google.protobuf.Timestamp exited_at = 4 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 4;
 	// id is the specific exec. By default if omitted will be `""` thus matches
 	// the init exec of the task matching `container_id`.
 	string id = 5;
@@ -62,7 +62,7 @@ message TaskExit {
 	string id = 2;
 	uint32 pid = 3;
 	uint32 exit_status = 4;
-	google.protobuf.Timestamp exited_at = 5 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 5;
 }
 
 message TaskOOM {
diff --git a/api/next.pb.txt b/api/next.pb.txt
index 43cbe6c82..a0330f8c5 100644
--- a/api/next.pb.txt
+++ b/api/next.pb.txt
@@ -608,10 +608,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
     field {
@@ -689,10 +685,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
   }
@@ -899,10 +891,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "createdAt"
     }
     field {
@@ -911,10 +899,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     field {
@@ -1196,10 +1180,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "createdAt"
     }
     field {
@@ -1208,10 +1188,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     field {
@@ -1386,10 +1362,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "startedAt"
     }
     field {
@@ -1398,10 +1370,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     field {
@@ -1568,10 +1536,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "startedAt"
     }
     field {
@@ -1580,10 +1544,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     field {
@@ -1962,10 +1922,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "timestamp"
     }
     field {
@@ -2060,10 +2016,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "createdAt"
     }
     field {
@@ -2072,10 +2024,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     nested_type {
@@ -2494,10 +2442,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "createdAt"
     }
     field {
@@ -2987,10 +2931,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "createdAt"
     }
     field {
@@ -2999,10 +2939,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     field {
@@ -3299,10 +3235,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
   }
@@ -3352,10 +3284,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
     field {
@@ -3702,10 +3630,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "createdAt"
     }
     field {
@@ -3714,10 +3638,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "updatedAt"
     }
     field {
@@ -3973,10 +3893,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "timestamp"
     }
     field {
@@ -4078,10 +3994,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
   }
@@ -4295,10 +4207,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
   }
@@ -4686,10 +4594,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "exitedAt"
     }
   }
@@ -4813,10 +4717,6 @@ file {
       label: LABEL_OPTIONAL
       type: TYPE_MESSAGE
       type_name: ".google.protobuf.Timestamp"
-      options {
-        65010: 1
-        65001: 0
-      }
       json_name: "timestamp"
     }
     field {
diff --git a/api/services/containers/v1/containers.pb.go b/api/services/containers/v1/containers.pb.go
index 909aa795e..f1081014e 100644
--- a/api/services/containers/v1/containers.pb.go
+++ b/api/services/containers/v1/containers.pb.go
@@ -9,7 +9,6 @@ import (
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -19,14 +18,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -69,9 +66,9 @@ type Container struct {
 	// This field may be updated.
 	SnapshotKey string `protobuf:"bytes,7,opt,name=snapshot_key,json=snapshotKey,proto3" json:"snapshot_key,omitempty"`
 	// CreatedAt is the time the container was first created.
-	CreatedAt time.Time `protobuf:"bytes,8,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
+	CreatedAt *types.Timestamp `protobuf:"bytes,8,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 	// UpdatedAt is the last time the container was mutated.
-	UpdatedAt time.Time `protobuf:"bytes,9,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
+	UpdatedAt *types.Timestamp `protobuf:"bytes,9,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
 	// Extensions allow clients to provide zero or more blobs that are directly
 	// associated with the container. One may provide protobuf, json, or other
 	// encoding formats. The primary use of this is to further decorate the
@@ -596,59 +593,59 @@ func init() {
 }
 
 var fileDescriptor_311afb8e15951042 = []byte{
-	// 832 bytes of a gzipped FileDescriptorProto
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+	// 820 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x56, 0xcb, 0x6e, 0x13, 0x49,
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+	0xbc, 0xb2, 0x46, 0xd0, 0x4e, 0x0c, 0x22, 0x2f, 0x36, 0x79, 0x0b, 0x48, 0x50, 0xd4, 0x81, 0x0d,
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+	0x9a, 0x6e, 0xd3, 0xe5, 0xd9, 0x15, 0xb6, 0x0a, 0x80, 0xea, 0xbf, 0x4d, 0xd7, 0x6d, 0x5a, 0xb8,
+	0xc2, 0xa3, 0x5a, 0xfb, 0xb8, 0x62, 0x38, 0x5d, 0xb1, 0xf5, 0xdf, 0xe0, 0x16, 0xb6, 0x3d, 0x1a,
+	0x6e, 0x16, 0x07, 0x37, 0x8f, 0x4d, 0x6c, 0x35, 0x8e, 0x6c, 0x83, 0xb4, 0x44, 0xc6, 0xdc, 0x60,
+	0x06, 0x35, 0x6d, 0x4c, 0xa8, 0x61, 0x7b, 0x41, 0x42, 0xe9, 0x93, 0x0c, 0x99, 0xcd, 0x90, 0x22,
+	0xca, 0x43, 0xc2, 0x6c, 0x28, 0x52, 0x51, 0x2a, 0x67, 0x36, 0xe4, 0xde, 0xc5, 0x5c, 0xe2, 0xc9,
+	0x96, 0x9e, 0x30, 0x1b, 0xe8, 0x00, 0x64, 0xcb, 0xa8, 0x61, 0x8b, 0x28, 0x89, 0x62, 0xb2, 0x9c,
+	0xad, 0x2e, 0x6b, 0xd7, 0x1e, 0x55, 0xeb, 0x57, 0xd5, 0xf6, 0x38, 0x74, 0xdb, 0xa1, 0x7e, 0x57,
+	0x17, 0x75, 0x50, 0x0e, 0x66, 0x4d, 0xdb, 0x68, 0x62, 0x25, 0xc9, 0x9a, 0xe9, 0x41, 0x80, 0x9e,
+	0x43, 0xda, 0x6f, 0x3b, 0x8c, 0xa3, 0x92, 0x2a, 0x4a, 0xe5, 0x6c, 0xf5, 0xe1, 0x54, 0x8d, 0xf4,
+	0x00, 0xab, 0x87, 0x45, 0x50, 0x19, 0x52, 0xc4, 0xc3, 0x75, 0x65, 0x96, 0x17, 0xcb, 0x69, 0x81,
+	0x1a, 0x5a, 0xa8, 0x86, 0xb6, 0xee, 0x74, 0x75, 0x9e, 0x81, 0x8a, 0x90, 0x25, 0x8e, 0xe1, 0x91,
+	0x13, 0x97, 0x52, 0xec, 0x2b, 0x32, 0x67, 0x15, 0xff, 0x09, 0xcd, 0xc3, 0xef, 0x61, 0x78, 0xd4,
+	0xc2, 0x5d, 0x25, 0x7d, 0x35, 0xe5, 0x19, 0xee, 0xa2, 0x15, 0x80, 0xba, 0x8f, 0x0d, 0x8a, 0x1b,
+	0x47, 0x06, 0x55, 0x7e, 0xe3, 0x4d, 0xd5, 0xa1, 0xa6, 0x2f, 0xc2, 0x11, 0xe8, 0x19, 0x91, 0xbd,
+	0x4e, 0x19, 0xb4, 0xed, 0x35, 0x42, 0x68, 0xe6, 0x7a, 0xa8, 0xc8, 0x5e, 0xa7, 0xa8, 0x06, 0x80,
+	0x4f, 0x29, 0x76, 0x88, 0xe9, 0x3a, 0x44, 0x01, 0x3e, 0xa0, 0xc7, 0x53, 0xe9, 0xb6, 0xdd, 0x87,
+	0xf3, 0x21, 0x6d, 0xa4, 0xce, 0x2f, 0xe6, 0x66, 0xf4, 0x58, 0x55, 0xa4, 0x40, 0x9a, 0x18, 0x4e,
+	0xa3, 0xe6, 0x9e, 0x2a, 0x59, 0x7e, 0xee, 0x30, 0x54, 0x57, 0x20, 0x1b, 0x9b, 0x2f, 0xfa, 0x13,
+	0x92, 0x4c, 0x1c, 0x7e, 0x85, 0x74, 0xb6, 0x64, 0x93, 0xee, 0x18, 0x56, 0x1b, 0x2b, 0x89, 0x60,
+	0xd2, 0x3c, 0x58, 0x4d, 0x2c, 0x4b, 0xea, 0x3e, 0xa4, 0xc5, 0xc4, 0x10, 0x82, 0x94, 0x63, 0xd8,
+	0x58, 0xe0, 0xf8, 0x1a, 0x69, 0x90, 0x76, 0x3d, 0xca, 0x0f, 0x95, 0xf8, 0xc9, 0xfc, 0xc2, 0x24,
+	0xf5, 0x10, 0xfe, 0x18, 0x38, 0xc8, 0x08, 0x36, 0xff, 0xc7, 0xd9, 0x8c, 0x2b, 0x19, 0x71, 0x2c,
+	0xdd, 0x87, 0xbf, 0x76, 0x31, 0xed, 0x4b, 0xa5, 0xe3, 0x77, 0x6d, 0x4c, 0xe8, 0x38, 0xa3, 0x94,
+	0x4e, 0x20, 0x77, 0x35, 0x9d, 0x78, 0xae, 0x43, 0x30, 0x3a, 0x80, 0x4c, 0x5f, 0x7c, 0x0e, 0xcb,
+	0x56, 0xef, 0x4d, 0x33, 0x22, 0x31, 0x92, 0xa8, 0x48, 0x69, 0x11, 0xfe, 0xde, 0x33, 0x49, 0xd4,
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+	0xaa, 0x94, 0xde, 0x42, 0x7e, 0x93, 0x5f, 0xef, 0x21, 0xf1, 0x7e, 0xbd, 0x18, 0x2d, 0xf8, 0x67,
+	0xa8, 0xd7, 0x9d, 0x29, 0xff, 0x59, 0x82, 0xfc, 0x4b, 0xee, 0xbe, 0xbb, 0x3f, 0x19, 0x5a, 0x83,
+	0x6c, 0xe0, 0x74, 0xfe, 0xaa, 0x8b, 0x5b, 0x3b, 0xfc, 0x30, 0xec, 0xb0, 0x87, 0x7f, 0xdf, 0x20,
+	0x2d, 0x5d, 0x3c, 0x23, 0x6c, 0xcd, 0x64, 0x19, 0x22, 0x7a, 0x67, 0xb2, 0x2c, 0x40, 0x7e, 0x0b,
+	0x5b, 0x78, 0x84, 0x2a, 0xe3, 0xcc, 0x52, 0x83, 0xdc, 0x95, 0xfb, 0xb8, 0x8f, 0x09, 0x61, 0xff,
+	0x02, 0x4f, 0x6f, 0xc9, 0x2d, 0xc6, 0xaa, 0xfa, 0x7d, 0x16, 0x20, 0xba, 0xf0, 0xa8, 0x03, 0xc9,
+	0x5d, 0x4c, 0xd1, 0xa3, 0x09, 0xca, 0x8d, 0xb0, 0xbd, 0xba, 0x34, 0x35, 0x4e, 0xc8, 0xfd, 0x1e,
+	0x52, 0xec, 0xa8, 0x68, 0x92, 0x3f, 0xce, 0x91, 0xb6, 0x56, 0x57, 0x6e, 0x80, 0x14, 0xcd, 0x3f,
+	0x4a, 0x00, 0x6c, 0xeb, 0x90, 0xfa, 0xd8, 0xb0, 0x6f, 0xc1, 0x61, 0x69, 0x5a, 0xa4, 0x98, 0xe8,
+	0x82, 0x84, 0xce, 0x40, 0x0e, 0x1c, 0x8a, 0x26, 0x39, 0xc8, 0xe8, 0x87, 0x43, 0x5d, 0xbd, 0x09,
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+	0xee, 0x35, 0xc8, 0x81, 0x3f, 0x26, 0x22, 0x30, 0xda, 0x4a, 0x6a, 0x7e, 0xc8, 0xf9, 0xdb, 0xec,
+	0x7b, 0x70, 0xe3, 0xcd, 0xf9, 0x65, 0x61, 0xe6, 0xeb, 0x65, 0x61, 0xe6, 0x43, 0xaf, 0x20, 0x9d,
+	0xf7, 0x0a, 0xd2, 0x97, 0x5e, 0x41, 0xfa, 0xd6, 0x2b, 0x48, 0xaf, 0x76, 0x6e, 0xf1, 0x89, 0xbb,
+	0x16, 0x45, 0x35, 0x99, 0x77, 0x7c, 0xf0, 0x23, 0x00, 0x00, 0xff, 0xff, 0xf1, 0x68, 0x0f, 0x41,
+	0x33, 0x0b, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -994,22 +991,30 @@ func (m *Container) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			dAtA[i] = 0x52
 		}
 	}
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err2 != nil {
-		return 0, err2
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContainers(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x4a
 	}
-	i -= n2
-	i = encodeVarintContainers(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0x4a
-	n3, err3 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt):])
-	if err3 != nil {
-		return 0, err3
+	if m.CreatedAt != nil {
+		{
+			size, err := m.CreatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContainers(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x42
 	}
-	i -= n3
-	i = encodeVarintContainers(dAtA, i, uint64(n3))
-	i--
-	dAtA[i] = 0x42
 	if len(m.SnapshotKey) > 0 {
 		i -= len(m.SnapshotKey)
 		copy(dAtA[i:], m.SnapshotKey)
@@ -1560,10 +1565,14 @@ func (m *Container) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovContainers(uint64(l))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
-	n += 1 + l + sovContainers(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovContainers(uint64(l))
+	if m.CreatedAt != nil {
+		l = m.CreatedAt.Size()
+		n += 1 + l + sovContainers(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovContainers(uint64(l))
+	}
 	if len(m.Extensions) > 0 {
 		for k, v := range m.Extensions {
 			_ = k
@@ -1799,8 +1808,8 @@ func (this *Container) String() string {
 		`Spec:` + strings.Replace(fmt.Sprintf("%v", this.Spec), "Any", "types.Any", 1) + `,`,
 		`Snapshotter:` + fmt.Sprintf("%v", this.Snapshotter) + `,`,
 		`SnapshotKey:` + fmt.Sprintf("%v", this.SnapshotKey) + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Extensions:` + mapStringForExtensions + `,`,
 		`Sandbox:` + fmt.Sprintf("%v", this.Sandbox) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
@@ -2329,7 +2338,10 @@ func (m *Container) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.CreatedAt == nil {
+				m.CreatedAt = &types.Timestamp{}
+			}
+			if err := m.CreatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -2362,7 +2374,10 @@ func (m *Container) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/containers/v1/containers.proto b/api/services/containers/v1/containers.proto
index 28bc5628d..1547d6274 100644
--- a/api/services/containers/v1/containers.proto
+++ b/api/services/containers/v1/containers.proto
@@ -99,10 +99,10 @@ message Container {
 	string snapshot_key = 7;
 
 	// CreatedAt is the time the container was first created.
-	google.protobuf.Timestamp created_at = 8 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp created_at = 8;
 
 	// UpdatedAt is the last time the container was mutated.
-	google.protobuf.Timestamp updated_at = 9 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp updated_at = 9;
 
 	// Extensions allow clients to provide zero or more blobs that are directly
 	// associated with the container. One may provide protobuf, json, or other
diff --git a/api/services/content/v1/content.pb.go b/api/services/content/v1/content.pb.go
index 586a6740b..4b1933fb2 100644
--- a/api/services/content/v1/content.pb.go
+++ b/api/services/content/v1/content.pb.go
@@ -9,7 +9,6 @@ import (
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -19,14 +18,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -84,9 +81,9 @@ type Info struct {
 	// Size is the total number of bytes in the blob.
 	Size_ int64 `protobuf:"varint,2,opt,name=size,proto3" json:"size,omitempty"`
 	// CreatedAt provides the time at which the blob was committed.
-	CreatedAt time.Time `protobuf:"bytes,3,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
+	CreatedAt *types.Timestamp `protobuf:"bytes,3,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 	// UpdatedAt provides the time the info was last updated.
-	UpdatedAt time.Time `protobuf:"bytes,4,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
+	UpdatedAt *types.Timestamp `protobuf:"bytes,4,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
 	// Labels are arbitrary data on snapshots.
 	//
 	// The combined size of a key/value pair cannot exceed 4096 bytes.
@@ -510,15 +507,15 @@ func (m *ReadContentResponse) XXX_DiscardUnknown() {
 var xxx_messageInfo_ReadContentResponse proto.InternalMessageInfo
 
 type Status struct {
-	StartedAt            time.Time `protobuf:"bytes,1,opt,name=started_at,json=startedAt,proto3,stdtime" json:"started_at"`
-	UpdatedAt            time.Time `protobuf:"bytes,2,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
-	Ref                  string    `protobuf:"bytes,3,opt,name=ref,proto3" json:"ref,omitempty"`
-	Offset               int64     `protobuf:"varint,4,opt,name=offset,proto3" json:"offset,omitempty"`
-	Total                int64     `protobuf:"varint,5,opt,name=total,proto3" json:"total,omitempty"`
-	Expected             string    `protobuf:"bytes,6,opt,name=expected,proto3" json:"expected,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	StartedAt            *types.Timestamp `protobuf:"bytes,1,opt,name=started_at,json=startedAt,proto3" json:"started_at,omitempty"`
+	UpdatedAt            *types.Timestamp `protobuf:"bytes,2,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
+	Ref                  string           `protobuf:"bytes,3,opt,name=ref,proto3" json:"ref,omitempty"`
+	Offset               int64            `protobuf:"varint,4,opt,name=offset,proto3" json:"offset,omitempty"`
+	Total                int64            `protobuf:"varint,5,opt,name=total,proto3" json:"total,omitempty"`
+	Expected             string           `protobuf:"bytes,6,opt,name=expected,proto3" json:"expected,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Status) Reset()      { *m = Status{} }
@@ -810,12 +807,12 @@ type WriteContentResponse struct {
 	//
 	// This must be set for stat and commit write actions. All other write
 	// actions may omit this.
-	StartedAt time.Time `protobuf:"bytes,2,opt,name=started_at,json=startedAt,proto3,stdtime" json:"started_at"`
+	StartedAt *types.Timestamp `protobuf:"bytes,2,opt,name=started_at,json=startedAt,proto3" json:"started_at,omitempty"`
 	// UpdatedAt provides the last time of a successful write.
 	//
 	// This must be set for stat and commit write actions. All other write
 	// actions may omit this.
-	UpdatedAt time.Time `protobuf:"bytes,3,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
+	UpdatedAt *types.Timestamp `protobuf:"bytes,3,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
 	// Offset is the current committed size for the write.
 	Offset int64 `protobuf:"varint,4,opt,name=offset,proto3" json:"offset,omitempty"`
 	// Total provides the current, expected total size of the write.
@@ -934,69 +931,68 @@ func init() {
 }
 
 var fileDescriptor_468430ba3e400391 = []byte{
-	// 989 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x57, 0xcf, 0x6e, 0x1b, 0x45,
-	0x18, 0xcf, 0xec, 0xae, 0x37, 0xf1, 0xe7, 0xb4, 0xb2, 0x26, 0x56, 0x65, 0x2d, 0x92, 0x63, 0x56,
-	0x80, 0x2c, 0x4a, 0xd7, 0xa9, 0xdb, 0x03, 0x50, 0x09, 0x70, 0x42, 0xaa, 0x46, 0x6a, 0x00, 0x6d,
-	0x5d, 0x82, 0x7a, 0x29, 0x63, 0x7b, 0x6c, 0x56, 0xb1, 0x77, 0xdd, 0x9d, 0xb1, 0x45, 0x38, 0xf1,
-	0x00, 0x1c, 0x78, 0x0f, 0xde, 0x01, 0x89, 0x5b, 0x8e, 0x1c, 0x39, 0x15, 0x9a, 0x07, 0xe0, 0x19,
-	0xd0, 0xcc, 0xce, 0xda, 0x5e, 0xff, 0x61, 0xd7, 0x69, 0x6e, 0x33, 0xe3, 0xef, 0xf7, 0xfd, 0xff,
-	0x7d, 0xdf, 0x1a, 0x1e, 0xf7, 0x3d, 0xfe, 0xc3, 0xb8, 0xed, 0x74, 0x82, 0x61, 0xbd, 0x13, 0xf8,
-	0x9c, 0x78, 0x3e, 0x0d, 0xbb, 0xf3, 0x47, 0x32, 0xf2, 0xea, 0x8c, 0x86, 0x13, 0xaf, 0x43, 0x99,
-	0x7c, 0xa7, 0x3e, 0xaf, 0x4f, 0xee, 0xc7, 0x47, 0x67, 0x14, 0x06, 0x3c, 0xc0, 0x95, 0x19, 0xc2,
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -1585,22 +1581,30 @@ func (m *Info) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			dAtA[i] = 0x2a
 		}
 	}
-	n1, err1 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err1 != nil {
-		return 0, err1
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContent(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x22
 	}
-	i -= n1
-	i = encodeVarintContent(dAtA, i, uint64(n1))
-	i--
-	dAtA[i] = 0x22
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt):])
-	if err2 != nil {
-		return 0, err2
+	if m.CreatedAt != nil {
+		{
+			size, err := m.CreatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContent(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
 	}
-	i -= n2
-	i = encodeVarintContent(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0x1a
 	if m.Size_ != 0 {
 		i = encodeVarintContent(dAtA, i, uint64(m.Size_))
 		i--
@@ -2015,22 +2019,30 @@ func (m *Status) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x1a
 	}
-	n7, err7 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err7 != nil {
-		return 0, err7
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContent(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x12
 	}
-	i -= n7
-	i = encodeVarintContent(dAtA, i, uint64(n7))
-	i--
-	dAtA[i] = 0x12
-	n8, err8 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.StartedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.StartedAt):])
-	if err8 != nil {
-		return 0, err8
+	if m.StartedAt != nil {
+		{
+			size, err := m.StartedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContent(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
 	}
-	i -= n8
-	i = encodeVarintContent(dAtA, i, uint64(n8))
-	i--
-	dAtA[i] = 0xa
 	return len(dAtA) - i, nil
 }
 
@@ -2307,22 +2319,30 @@ func (m *WriteContentResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x20
 	}
-	n10, err10 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err10 != nil {
-		return 0, err10
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContent(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x1a
 	}
-	i -= n10
-	i = encodeVarintContent(dAtA, i, uint64(n10))
-	i--
-	dAtA[i] = 0x1a
-	n11, err11 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.StartedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.StartedAt):])
-	if err11 != nil {
-		return 0, err11
+	if m.StartedAt != nil {
+		{
+			size, err := m.StartedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintContent(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x12
 	}
-	i -= n11
-	i = encodeVarintContent(dAtA, i, uint64(n11))
-	i--
-	dAtA[i] = 0x12
 	if m.Action != 0 {
 		i = encodeVarintContent(dAtA, i, uint64(m.Action))
 		i--
@@ -2389,10 +2409,14 @@ func (m *Info) Size() (n int) {
 	if m.Size_ != 0 {
 		n += 1 + sovContent(uint64(m.Size_))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
-	n += 1 + l + sovContent(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovContent(uint64(l))
+	if m.CreatedAt != nil {
+		l = m.CreatedAt.Size()
+		n += 1 + l + sovContent(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovContent(uint64(l))
+	}
 	if len(m.Labels) > 0 {
 		for k, v := range m.Labels {
 			_ = k
@@ -2568,10 +2592,14 @@ func (m *Status) Size() (n int) {
 	}
 	var l int
 	_ = l
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.StartedAt)
-	n += 1 + l + sovContent(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovContent(uint64(l))
+	if m.StartedAt != nil {
+		l = m.StartedAt.Size()
+		n += 1 + l + sovContent(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovContent(uint64(l))
+	}
 	l = len(m.Ref)
 	if l > 0 {
 		n += 1 + l + sovContent(uint64(l))
@@ -2710,10 +2738,14 @@ func (m *WriteContentResponse) Size() (n int) {
 	if m.Action != 0 {
 		n += 1 + sovContent(uint64(m.Action))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.StartedAt)
-	n += 1 + l + sovContent(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovContent(uint64(l))
+	if m.StartedAt != nil {
+		l = m.StartedAt.Size()
+		n += 1 + l + sovContent(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovContent(uint64(l))
+	}
 	if m.Offset != 0 {
 		n += 1 + sovContent(uint64(m.Offset))
 	}
@@ -2769,8 +2801,8 @@ func (this *Info) String() string {
 	s := strings.Join([]string{`&Info{`,
 		`Digest:` + fmt.Sprintf("%v", this.Digest) + `,`,
 		`Size_:` + fmt.Sprintf("%v", this.Size_) + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Labels:` + mapStringForLabels + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
@@ -2890,8 +2922,8 @@ func (this *Status) String() string {
 		return "nil"
 	}
 	s := strings.Join([]string{`&Status{`,
-		`StartedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.StartedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`StartedAt:` + strings.Replace(fmt.Sprintf("%v", this.StartedAt), "Timestamp", "types.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Ref:` + fmt.Sprintf("%v", this.Ref) + `,`,
 		`Offset:` + fmt.Sprintf("%v", this.Offset) + `,`,
 		`Total:` + fmt.Sprintf("%v", this.Total) + `,`,
@@ -2983,8 +3015,8 @@ func (this *WriteContentResponse) String() string {
 	}
 	s := strings.Join([]string{`&WriteContentResponse{`,
 		`Action:` + fmt.Sprintf("%v", this.Action) + `,`,
-		`StartedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.StartedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`StartedAt:` + strings.Replace(fmt.Sprintf("%v", this.StartedAt), "Timestamp", "types.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Offset:` + fmt.Sprintf("%v", this.Offset) + `,`,
 		`Total:` + fmt.Sprintf("%v", this.Total) + `,`,
 		`Digest:` + fmt.Sprintf("%v", this.Digest) + `,`,
@@ -3121,7 +3153,10 @@ func (m *Info) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.CreatedAt == nil {
+				m.CreatedAt = &types.Timestamp{}
+			}
+			if err := m.CreatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -3154,7 +3189,10 @@ func (m *Info) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -4212,7 +4250,10 @@ func (m *Status) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.StartedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.StartedAt == nil {
+				m.StartedAt = &types.Timestamp{}
+			}
+			if err := m.StartedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -4245,7 +4286,10 @@ func (m *Status) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -5121,7 +5165,10 @@ func (m *WriteContentResponse) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.StartedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.StartedAt == nil {
+				m.StartedAt = &types.Timestamp{}
+			}
+			if err := m.StartedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -5154,7 +5201,10 @@ func (m *WriteContentResponse) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/content/v1/content.proto b/api/services/content/v1/content.proto
index 89e6651eb..405f14e8a 100644
--- a/api/services/content/v1/content.proto
+++ b/api/services/content/v1/content.proto
@@ -98,10 +98,10 @@ message Info {
 	int64 size = 2;
 
 	// CreatedAt provides the time at which the blob was committed.
-	google.protobuf.Timestamp created_at = 3 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp created_at = 3;
 
 	// UpdatedAt provides the time the info was last updated.
-	google.protobuf.Timestamp updated_at = 4 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp updated_at = 4;
 
 	// Labels are arbitrary data on snapshots.
 	//
@@ -179,8 +179,8 @@ message ReadContentResponse {
 }
 
 message Status {
-	google.protobuf.Timestamp started_at = 1 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
-	google.protobuf.Timestamp updated_at = 2 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp started_at = 1;
+	google.protobuf.Timestamp updated_at = 2;
 	string ref = 3;
 	int64 offset = 4;
 	int64 total = 5;
@@ -301,13 +301,13 @@ message WriteContentResponse {
 	//
 	// This must be set for stat and commit write actions. All other write
 	// actions may omit this.
-	google.protobuf.Timestamp started_at = 2 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp started_at = 2;
 
 	// UpdatedAt provides the last time of a successful write.
 	//
 	// This must be set for stat and commit write actions. All other write
 	// actions may omit this.
-	google.protobuf.Timestamp updated_at = 3 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp updated_at = 3;
 
 	// Offset is the current committed size for the write.
 	int64 offset = 4;
diff --git a/api/services/events/v1/events.pb.go b/api/services/events/v1/events.pb.go
index ed33bb6e1..9a23bfdee 100644
--- a/api/services/events/v1/events.pb.go
+++ b/api/services/events/v1/events.pb.go
@@ -10,7 +10,6 @@ import (
 	github_com_containerd_typeurl "github.com/containerd/typeurl"
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -20,14 +19,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -154,13 +151,13 @@ func (m *SubscribeRequest) XXX_DiscardUnknown() {
 var xxx_messageInfo_SubscribeRequest proto.InternalMessageInfo
 
 type Envelope struct {
-	Timestamp            time.Time  `protobuf:"bytes,1,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
-	Namespace            string     `protobuf:"bytes,2,opt,name=namespace,proto3" json:"namespace,omitempty"`
-	Topic                string     `protobuf:"bytes,3,opt,name=topic,proto3" json:"topic,omitempty"`
-	Event                *types.Any `protobuf:"bytes,4,opt,name=event,proto3" json:"event,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
-	XXX_unrecognized     []byte     `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
+	Timestamp            *types.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	Namespace            string           `protobuf:"bytes,2,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic                string           `protobuf:"bytes,3,opt,name=topic,proto3" json:"topic,omitempty"`
+	Event                *types.Any       `protobuf:"bytes,4,opt,name=event,proto3" json:"event,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Envelope) Reset()      { *m = Envelope{} }
@@ -207,36 +204,36 @@ func init() {
 }
 
 var fileDescriptor_43fcd20dc1642376 = []byte{
-	// 462 bytes of a gzipped FileDescriptorProto
+	// 452 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x9c, 0x93, 0xcd, 0x8e, 0xd3, 0x30,
-	0x14, 0x85, 0xeb, 0xf9, 0x6d, 0x3c, 0xd2, 0x08, 0x45, 0x15, 0x2a, 0x01, 0xd2, 0xaa, 0x1b, 0x2a,
-	0x04, 0x0e, 0x53, 0x76, 0x20, 0x21, 0x28, 0x94, 0xf5, 0x28, 0x80, 0x84, 0xd8, 0x25, 0xe9, 0x6d,
-	0x6a, 0x29, 0xb1, 0x4d, 0xec, 0x04, 0xcd, 0x6e, 0x1e, 0x81, 0x0d, 0x6f, 0xc2, 0x86, 0x37, 0xe8,
-	0x92, 0x25, 0x2b, 0x60, 0xfa, 0x24, 0xa8, 0x89, 0xdd, 0x30, 0x2d, 0x10, 0x34, 0xbb, 0x6b, 0xdf,
-	0xe3, 0xcf, 0xb9, 0xe7, 0x38, 0xf8, 0x45, 0x4c, 0xd5, 0x3c, 0x0f, 0x49, 0xc4, 0x53, 0x2f, 0xe2,
-	0x4c, 0x05, 0x94, 0x41, 0x36, 0xfd, 0xbd, 0x0c, 0x04, 0xf5, 0x24, 0x64, 0x05, 0x8d, 0x40, 0x7a,
-	0x50, 0x00, 0x53, 0xd2, 0x2b, 0x4e, 0x74, 0x45, 0x44, 0xc6, 0x15, 0xb7, 0x6f, 0xd7, 0x7a, 0x62,
-	0xb4, 0x44, 0x2b, 0x8a, 0x13, 0xe7, 0x69, 0xe3, 0x25, 0x25, 0x26, 0xcc, 0x67, 0x9e, 0x48, 0xf2,
-	0x98, 0x32, 0x6f, 0x46, 0x21, 0x99, 0x8a, 0x40, 0xcd, 0xab, 0x0b, 0x9c, 0x4e, 0xcc, 0x63, 0x5e,
-	0x96, 0xde, 0xaa, 0xd2, 0xbb, 0x37, 0x62, 0xce, 0xe3, 0x04, 0xea, 0xd3, 0x01, 0x3b, 0xd3, 0xad,
-	0x9b, 0x9b, 0x2d, 0x48, 0x85, 0x32, 0xcd, 0xde, 0x66, 0x53, 0xd1, 0x14, 0xa4, 0x0a, 0x52, 0x51,
-	0x09, 0x06, 0x3e, 0x3e, 0x3e, 0xcd, 0xc3, 0x84, 0xca, 0xb9, 0x0f, 0xef, 0x73, 0x90, 0xca, 0xee,
-	0xe0, 0x7d, 0xc5, 0x05, 0x8d, 0xba, 0xa8, 0x8f, 0x86, 0x96, 0x5f, 0x2d, 0xec, 0xbb, 0x78, 0xbf,
-	0x9c, 0xb2, 0xbb, 0xd3, 0x47, 0xc3, 0xa3, 0x51, 0x87, 0x54, 0x60, 0x62, 0xc0, 0xe4, 0x19, 0x3b,
-	0xf3, 0x2b, 0xc9, 0xe0, 0x0d, 0x3e, 0x7e, 0xc9, 0xb3, 0x0f, 0x41, 0x36, 0x35, 0xcc, 0xe7, 0xb8,
-	0x0d, 0xac, 0x80, 0x84, 0x0b, 0x28, 0xb1, 0x47, 0xa3, 0x3b, 0xe4, 0x9f, 0x46, 0x92, 0x89, 0x96,
-	0xfb, 0xeb, 0x83, 0x83, 0x7b, 0xf8, 0xda, 0xab, 0x3c, 0x94, 0x51, 0x46, 0x43, 0x30, 0xe0, 0x2e,
-	0x3e, 0x9c, 0xd1, 0x44, 0x41, 0x26, 0xbb, 0xa8, 0xbf, 0x3b, 0xb4, 0x7c, 0xb3, 0x1c, 0x7c, 0x46,
-	0xb8, 0x6d, 0x20, 0xf6, 0x18, 0x5b, 0xeb, 0xc1, 0xf5, 0x07, 0x38, 0x5b, 0x13, 0xbc, 0x36, 0x8a,
-	0x71, 0x7b, 0xf1, 0xbd, 0xd7, 0xfa, 0xf8, 0xa3, 0x87, 0xfc, 0xfa, 0x98, 0x7d, 0x0b, 0x5b, 0x2c,
-	0x48, 0x41, 0x8a, 0x20, 0x82, 0xd2, 0x05, 0xcb, 0xaf, 0x37, 0x6a, 0xd7, 0x76, 0xff, 0xe8, 0xda,
-	0x5e, 0xa3, 0x6b, 0x8f, 0xf6, 0xce, 0xbf, 0xf4, 0xd0, 0xe8, 0xd3, 0x0e, 0x3e, 0x98, 0x94, 0x2e,
-	0xd8, 0xa7, 0xf8, 0x50, 0x47, 0x63, 0xdf, 0x6f, 0x70, 0xeb, 0x72, 0x84, 0xce, 0xf5, 0xad, 0x7b,
-	0x26, 0xab, 0x37, 0xb1, 0x22, 0xea, 0x60, 0x1a, 0x89, 0x97, 0x03, 0xfc, 0x2b, 0x31, 0xc6, 0xd6,
-	0x3a, 0x13, 0xdb, 0x6b, 0x60, 0x6e, 0xa6, 0xe7, 0xfc, 0xef, 0x23, 0x78, 0x80, 0xc6, 0x6f, 0x17,
-	0x17, 0x6e, 0xeb, 0xdb, 0x85, 0xdb, 0x3a, 0x5f, 0xba, 0x68, 0xb1, 0x74, 0xd1, 0xd7, 0xa5, 0x8b,
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-	0xfc, 0x15, 0x00, 0x00, 0xff, 0xff, 0x1c, 0x38, 0x37, 0x72, 0x20, 0x04, 0x00, 0x00,
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+	0xfd, 0xcd, 0x01, 0x1a, 0x1d, 0x8c, 0x7b, 0xa4, 0x01, 0x13, 0x07, 0x26, 0xcf, 0xc5, 0x29, 0x6d,
+	0x24, 0xc3, 0x77, 0xf8, 0xf0, 0xb5, 0x2c, 0x3e, 0xb1, 0x62, 0xea, 0x98, 0x2f, 0xf1, 0x3e, 0x88,
+	0x0a, 0x32, 0xa9, 0xa0, 0xc6, 0x1e, 0x8c, 0xef, 0x90, 0xbf, 0x2e, 0x92, 0x4c, 0xac, 0x9c, 0xae,
+	0x1e, 0x0e, 0xef, 0xe1, 0x6b, 0x6f, 0xca, 0x58, 0x27, 0x05, 0x8f, 0xc1, 0x81, 0xfb, 0x78, 0x6f,
+	0xc6, 0x33, 0x03, 0x85, 0xee, 0xa3, 0xc1, 0xd6, 0xc8, 0xa3, 0xee, 0x38, 0xfc, 0x82, 0xf0, 0xbe,
+	0x83, 0xf8, 0x8f, 0xb0, 0xb7, 0x32, 0x6e, 0x7f, 0x40, 0x70, 0xc5, 0xc1, 0x5b, 0xa7, 0xa0, 0xad,
+	0xd8, 0xbf, 0x85, 0x3d, 0xc1, 0x72, 0xd0, 0x8a, 0x25, 0x50, 0x7b, 0xf7, 0x68, 0x7b, 0xd1, 0xee,
+	0x6a, 0xeb, 0xb7, 0xbb, 0xda, 0xee, 0xdc, 0xd5, 0xe3, 0xed, 0xb3, 0xaf, 0x47, 0x68, 0xfc, 0x79,
+	0x13, 0xef, 0x4e, 0x6a, 0xef, 0xfe, 0x09, 0xde, 0xb3, 0x81, 0xf8, 0xf7, 0x3b, 0x76, 0x74, 0x39,
+	0xb8, 0xe0, 0xfa, 0x95, 0x39, 0x93, 0xe5, 0x3f, 0x61, 0x49, 0xb4, 0x71, 0x74, 0x12, 0x2f, 0xc7,
+	0xf6, 0x47, 0x62, 0x8a, 0xbd, 0x55, 0x12, 0x7e, 0xd4, 0xc1, 0x5c, 0xcf, 0x2c, 0xf8, 0xd7, 0xe8,
+	0x1f, 0xa0, 0x17, 0xef, 0xcf, 0x2f, 0xc2, 0x8d, 0xef, 0x17, 0xe1, 0xc6, 0xd9, 0x22, 0x44, 0xe7,
+	0x8b, 0x10, 0x7d, 0x5b, 0x84, 0xe8, 0xc7, 0x22, 0x44, 0x1f, 0x9e, 0xfe, 0xe7, 0xd7, 0xfc, 0xa4,
+	0xa9, 0xe2, 0xdd, 0xda, 0xd2, 0xc3, 0x9f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x1b, 0x68, 0x58, 0xa9,
+	0x16, 0x04, 0x00, 0x00,
 }
 
 // Field returns the value for the given fieldpath as a string, if defined.
@@ -650,14 +647,18 @@ func (m *Envelope) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x12
 	}
-	n4, err4 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err4 != nil {
-		return 0, err4
+	if m.Timestamp != nil {
+		{
+			size, err := m.Timestamp.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintEvents(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
 	}
-	i -= n4
-	i = encodeVarintEvents(dAtA, i, uint64(n4))
-	i--
-	dAtA[i] = 0xa
 	return len(dAtA) - i, nil
 }
 
@@ -732,8 +733,10 @@ func (m *Envelope) Size() (n int) {
 	}
 	var l int
 	_ = l
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp)
-	n += 1 + l + sovEvents(uint64(l))
+	if m.Timestamp != nil {
+		l = m.Timestamp.Size()
+		n += 1 + l + sovEvents(uint64(l))
+	}
 	l = len(m.Namespace)
 	if l > 0 {
 		n += 1 + l + sovEvents(uint64(l))
@@ -797,7 +800,7 @@ func (this *Envelope) String() string {
 		return "nil"
 	}
 	s := strings.Join([]string{`&Envelope{`,
-		`Timestamp:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Timestamp), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`Timestamp:` + strings.Replace(fmt.Sprintf("%v", this.Timestamp), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Namespace:` + fmt.Sprintf("%v", this.Namespace) + `,`,
 		`Topic:` + fmt.Sprintf("%v", this.Topic) + `,`,
 		`Event:` + strings.Replace(fmt.Sprintf("%v", this.Event), "Any", "types.Any", 1) + `,`,
@@ -1161,7 +1164,10 @@ func (m *Envelope) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.Timestamp, dAtA[iNdEx:postIndex]); err != nil {
+			if m.Timestamp == nil {
+				m.Timestamp = &types.Timestamp{}
+			}
+			if err := m.Timestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/events/v1/events.proto b/api/services/events/v1/events.proto
index cd26998a5..ef392ca45 100644
--- a/api/services/events/v1/events.proto
+++ b/api/services/events/v1/events.proto
@@ -65,7 +65,7 @@ message SubscribeRequest {
 
 message Envelope {
 	option (containerd.plugin.fieldpath) = true;
-	google.protobuf.Timestamp timestamp = 1 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp timestamp = 1;
 	string namespace = 2;
 	string topic = 3;
 	google.protobuf.Any event = 4;
diff --git a/api/services/images/v1/images.pb.go b/api/services/images/v1/images.pb.go
index 4b993f9fc..e310c8fdb 100644
--- a/api/services/images/v1/images.pb.go
+++ b/api/services/images/v1/images.pb.go
@@ -10,7 +10,6 @@ import (
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types1 "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -20,14 +19,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -49,12 +46,12 @@ type Image struct {
 	// Target describes the content entry point of the image.
 	Target types.Descriptor `protobuf:"bytes,3,opt,name=target,proto3" json:"target"`
 	// CreatedAt is the time the image was first created.
-	CreatedAt time.Time `protobuf:"bytes,7,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
+	CreatedAt *types1.Timestamp `protobuf:"bytes,7,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 	// UpdatedAt is the last time the image was mutated.
-	UpdatedAt            time.Time `protobuf:"bytes,8,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	UpdatedAt            *types1.Timestamp `protobuf:"bytes,8,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
 }
 
 func (m *Image) Reset()      { *m = Image{} }
@@ -480,49 +477,48 @@ func init() {
 }
 
 var fileDescriptor_8666fa071128ae5f = []byte{
-	// 657 bytes of a gzipped FileDescriptorProto
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-	0x00,
+	// 647 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x55, 0x4d, 0x6f, 0xd3, 0x40,
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+	0x8d, 0xf6, 0xd3, 0xff, 0xd9, 0xee, 0xd1, 0xc9, 0x69, 0x65, 0xe1, 0xe7, 0x69, 0x65, 0xe1, 0xcb,
+	0xa8, 0x62, 0x9c, 0x8c, 0x2a, 0xc6, 0xf7, 0x51, 0xc5, 0xf8, 0x3d, 0xaa, 0x18, 0x1f, 0x9f, 0x5c,
+	0xf2, 0xdf, 0xbb, 0xad, 0xa2, 0xa6, 0x29, 0x2b, 0x3d, 0xfc, 0x13, 0x00, 0x00, 0xff, 0xff, 0xa2,
+	0xd0, 0x9c, 0x61, 0xc4, 0x07, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -789,22 +785,30 @@ func (m *Image) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	n1, err1 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err1 != nil {
-		return 0, err1
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintImages(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x42
 	}
-	i -= n1
-	i = encodeVarintImages(dAtA, i, uint64(n1))
-	i--
-	dAtA[i] = 0x42
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt):])
-	if err2 != nil {
-		return 0, err2
+	if m.CreatedAt != nil {
+		{
+			size, err := m.CreatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintImages(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x3a
 	}
-	i -= n2
-	i = encodeVarintImages(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0x3a
 	{
 		size, err := m.Target.MarshalToSizedBuffer(dAtA[:i])
 		if err != nil {
@@ -1229,10 +1233,14 @@ func (m *Image) Size() (n int) {
 	}
 	l = m.Target.Size()
 	n += 1 + l + sovImages(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
-	n += 1 + l + sovImages(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovImages(uint64(l))
+	if m.CreatedAt != nil {
+		l = m.CreatedAt.Size()
+		n += 1 + l + sovImages(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovImages(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -1410,8 +1418,8 @@ func (this *Image) String() string {
 		`Name:` + fmt.Sprintf("%v", this.Name) + `,`,
 		`Labels:` + mapStringForLabels + `,`,
 		`Target:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Target), "Descriptor", "types.Descriptor", 1), `&`, ``, 1) + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
@@ -1781,7 +1789,10 @@ func (m *Image) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.CreatedAt == nil {
+				m.CreatedAt = &types1.Timestamp{}
+			}
+			if err := m.CreatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -1814,7 +1825,10 @@ func (m *Image) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types1.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/images/v1/images.proto b/api/services/images/v1/images.proto
index 669eecbca..da1f7b652 100644
--- a/api/services/images/v1/images.proto
+++ b/api/services/images/v1/images.proto
@@ -74,10 +74,10 @@ message Image {
 	containerd.types.Descriptor target = 3 [(gogoproto.nullable) = false];
 
 	// CreatedAt is the time the image was first created.
-	google.protobuf.Timestamp created_at = 7 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp created_at = 7;
 
 	// UpdatedAt is the last time the image was mutated.
-	google.protobuf.Timestamp updated_at = 8 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp updated_at = 8;
 }
 
 message GetImageRequest {
diff --git a/api/services/leases/v1/leases.pb.go b/api/services/leases/v1/leases.pb.go
index a5c5d528a..e3d6ee74e 100644
--- a/api/services/leases/v1/leases.pb.go
+++ b/api/services/leases/v1/leases.pb.go
@@ -9,7 +9,6 @@ import (
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -19,14 +18,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -37,7 +34,7 @@ const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 // Lease is an object which retains resources while it exists.
 type Lease struct {
 	ID                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	CreatedAt            time.Time         `protobuf:"bytes,2,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
+	CreatedAt            *types.Timestamp  `protobuf:"bytes,2,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 	Labels               map[string]string `protobuf:"bytes,3,rep,name=labels,proto3" json:"labels,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
 	XXX_unrecognized     []byte            `json:"-"`
@@ -501,48 +498,47 @@ func init() {
 }
 
 var fileDescriptor_fefd70dfe8d93cbf = []byte{
-	// 642 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x55, 0xcd, 0x6e, 0xd3, 0x40,
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-	0x00, 0x00,
+	// 631 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x95, 0xdf, 0x6b, 0xd3, 0x50,
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+	0x34, 0x94, 0xc1, 0xd0, 0x50, 0xbe, 0x0d, 0x0d, 0xe5, 0xd7, 0xd0, 0x50, 0xde, 0x3d, 0xff, 0xcb,
+	0x7f, 0xe2, 0x03, 0x1e, 0x35, 0x55, 0xd6, 0xe5, 0xf6, 0xef, 0x00, 0x00, 0x00, 0xff, 0xff, 0x72,
+	0xbb, 0x87, 0xeb, 0xd2, 0x07, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -868,14 +864,18 @@ func (m *Lease) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			dAtA[i] = 0x1a
 		}
 	}
-	n1, err1 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt):])
-	if err1 != nil {
-		return 0, err1
+	if m.CreatedAt != nil {
+		{
+			size, err := m.CreatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintLeases(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x12
 	}
-	i -= n1
-	i = encodeVarintLeases(dAtA, i, uint64(n1))
-	i--
-	dAtA[i] = 0x12
 	if len(m.ID) > 0 {
 		i -= len(m.ID)
 		copy(dAtA[i:], m.ID)
@@ -1324,8 +1324,10 @@ func (m *Lease) Size() (n int) {
 	if l > 0 {
 		n += 1 + l + sovLeases(uint64(l))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
-	n += 1 + l + sovLeases(uint64(l))
+	if m.CreatedAt != nil {
+		l = m.CreatedAt.Size()
+		n += 1 + l + sovLeases(uint64(l))
+	}
 	if len(m.Labels) > 0 {
 		for k, v := range m.Labels {
 			_ = k
@@ -1547,7 +1549,7 @@ func (this *Lease) String() string {
 	mapStringForLabels += "}"
 	s := strings.Join([]string{`&Lease{`,
 		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Labels:` + mapStringForLabels + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
@@ -1787,7 +1789,10 @@ func (m *Lease) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.CreatedAt == nil {
+				m.CreatedAt = &types.Timestamp{}
+			}
+			if err := m.CreatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/leases/v1/leases.proto b/api/services/leases/v1/leases.proto
index 3ff071a89..56f2bb490 100644
--- a/api/services/leases/v1/leases.proto
+++ b/api/services/leases/v1/leases.proto
@@ -52,7 +52,7 @@ service Leases {
 message Lease {
 	string id = 1;
 
-	google.protobuf.Timestamp created_at = 2 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp created_at = 2;
 
 	map<string, string> labels = 3;
 }
diff --git a/api/services/sandbox/v1/sandbox.pb.go b/api/services/sandbox/v1/sandbox.pb.go
index 94403a005..019b558a1 100644
--- a/api/services/sandbox/v1/sandbox.pb.go
+++ b/api/services/sandbox/v1/sandbox.pb.go
@@ -16,7 +16,6 @@ import (
 	fmt "fmt"
 	types "github.com/containerd/containerd/api/types"
 	proto "github.com/gogo/protobuf/proto"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types1 "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -26,14 +25,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -630,11 +627,11 @@ func (m *ControllerWaitRequest) XXX_DiscardUnknown() {
 var xxx_messageInfo_ControllerWaitRequest proto.InternalMessageInfo
 
 type ControllerWaitResponse struct {
-	ExitStatus           uint32    `protobuf:"varint,1,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt             time.Time `protobuf:"bytes,2,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	ExitStatus           uint32            `protobuf:"varint,1,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt             *types1.Timestamp `protobuf:"bytes,2,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
 }
 
 func (m *ControllerWaitResponse) Reset()      { *m = ControllerWaitResponse{} }
@@ -709,15 +706,15 @@ func (m *ControllerStatusRequest) XXX_DiscardUnknown() {
 var xxx_messageInfo_ControllerStatusRequest proto.InternalMessageInfo
 
 type ControllerStatusResponse struct {
-	ID                   string      `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	Pid                  uint32      `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"`
-	State                string      `protobuf:"bytes,3,opt,name=state,proto3" json:"state,omitempty"`
-	ExitStatus           uint32      `protobuf:"varint,4,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt             time.Time   `protobuf:"bytes,5,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
-	Extra                *types1.Any `protobuf:"bytes,6,opt,name=extra,proto3" json:"extra,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}    `json:"-"`
-	XXX_unrecognized     []byte      `json:"-"`
-	XXX_sizecache        int32       `json:"-"`
+	ID                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Pid                  uint32            `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"`
+	State                string            `protobuf:"bytes,3,opt,name=state,proto3" json:"state,omitempty"`
+	ExitStatus           uint32            `protobuf:"varint,4,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt             *types1.Timestamp `protobuf:"bytes,5,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
+	Extra                *types1.Any       `protobuf:"bytes,6,opt,name=extra,proto3" json:"extra,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
 }
 
 func (m *ControllerStatusResponse) Reset()      { *m = ControllerStatusResponse{} }
@@ -778,61 +775,60 @@ func init() {
 }
 
 var fileDescriptor_d6eb1ebcbc2879f1 = []byte{
-	// 859 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x56, 0xcd, 0x6e, 0xeb, 0x44,
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-	0x00, 0xff, 0xff, 0x36, 0x7e, 0xfa, 0xf8, 0x14, 0x0c, 0x00, 0x00,
+	// 844 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xac, 0x56, 0xcb, 0x6e, 0xf3, 0x44,
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+	0xf3, 0x65, 0xff, 0xb3, 0x7f, 0x2a, 0x86, 0x3f, 0x15, 0xba, 0x32, 0x4f, 0xab, 0x83, 0xff, 0x02,
+	0x00, 0x00, 0xff, 0xff, 0x49, 0x81, 0x1b, 0x40, 0x00, 0x0c, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -1830,14 +1826,18 @@ func (m *ControllerWaitResponse) MarshalToSizedBuffer(dAtA []byte) (int, error)
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	n7, err7 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err7 != nil {
-		return 0, err7
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSandbox(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x12
 	}
-	i -= n7
-	i = encodeVarintSandbox(dAtA, i, uint64(n7))
-	i--
-	dAtA[i] = 0x12
 	if m.ExitStatus != 0 {
 		i = encodeVarintSandbox(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -1916,14 +1916,18 @@ func (m *ControllerStatusResponse) MarshalToSizedBuffer(dAtA []byte) (int, error
 		i--
 		dAtA[i] = 0x32
 	}
-	n9, err9 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err9 != nil {
-		return 0, err9
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSandbox(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x2a
 	}
-	i -= n9
-	i = encodeVarintSandbox(dAtA, i, uint64(n9))
-	i--
-	dAtA[i] = 0x2a
 	if m.ExitStatus != 0 {
 		i = encodeVarintSandbox(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -2221,8 +2225,10 @@ func (m *ControllerWaitResponse) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovSandbox(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovSandbox(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovSandbox(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -2265,8 +2271,10 @@ func (m *ControllerStatusResponse) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovSandbox(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovSandbox(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovSandbox(uint64(l))
+	}
 	if m.Extra != nil {
 		l = m.Extra.Size()
 		n += 1 + l + sovSandbox(uint64(l))
@@ -2467,7 +2475,7 @@ func (this *ControllerWaitResponse) String() string {
 	}
 	s := strings.Join([]string{`&ControllerWaitResponse{`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
@@ -2493,7 +2501,7 @@ func (this *ControllerStatusResponse) String() string {
 		`Pid:` + fmt.Sprintf("%v", this.Pid) + `,`,
 		`State:` + fmt.Sprintf("%v", this.State) + `,`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`Extra:` + strings.Replace(fmt.Sprintf("%v", this.Extra), "Any", "types1.Any", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
@@ -3916,7 +3924,10 @@ func (m *ControllerWaitResponse) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types1.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -4185,7 +4196,10 @@ func (m *ControllerStatusResponse) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types1.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/sandbox/v1/sandbox.proto b/api/services/sandbox/v1/sandbox.proto
index a3e5d9753..617ea6d1a 100644
--- a/api/services/sandbox/v1/sandbox.proto
+++ b/api/services/sandbox/v1/sandbox.proto
@@ -116,7 +116,7 @@ message ControllerWaitRequest {
 
 message ControllerWaitResponse {
 	uint32 exit_status = 1;
-	google.protobuf.Timestamp exited_at = 2 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 2;
 }
 
 message ControllerStatusRequest {
@@ -128,6 +128,6 @@ message ControllerStatusResponse {
 	uint32 pid = 2;
 	string state = 3;
 	uint32 exit_status = 4;
-	google.protobuf.Timestamp exited_at = 5 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 5;
 	google.protobuf.Any extra = 6;
 }
diff --git a/api/services/snapshots/v1/snapshots.pb.go b/api/services/snapshots/v1/snapshots.pb.go
index 2bc14cece..8ca82b0e4 100644
--- a/api/services/snapshots/v1/snapshots.pb.go
+++ b/api/services/snapshots/v1/snapshots.pb.go
@@ -10,7 +10,6 @@ import (
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types1 "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -20,14 +19,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -443,9 +440,9 @@ type Info struct {
 	Parent string `protobuf:"bytes,2,opt,name=parent,proto3" json:"parent,omitempty"`
 	Kind   Kind   `protobuf:"varint,3,opt,name=kind,proto3,enum=containerd.services.snapshots.v1.Kind" json:"kind,omitempty"`
 	// CreatedAt provides the time at which the snapshot was created.
-	CreatedAt time.Time `protobuf:"bytes,4,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
+	CreatedAt *types1.Timestamp `protobuf:"bytes,4,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 	// UpdatedAt provides the time the info was last updated.
-	UpdatedAt time.Time `protobuf:"bytes,5,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
+	UpdatedAt *types1.Timestamp `protobuf:"bytes,5,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
 	// Labels are arbitrary data on snapshots.
 	//
 	// The combined size of a key/value pair cannot exceed 4096 bytes.
@@ -851,69 +848,68 @@ func init() {
 }
 
 var fileDescriptor_cfc0ddf12791f168 = []byte{
-	// 978 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xb4, 0x57, 0xdd, 0x6e, 0xe3, 0x44,
-	0x14, 0xae, 0x13, 0x37, 0x6d, 0x4e, 0x68, 0x15, 0xcd, 0xa6, 0xdd, 0xc8, 0x48, 0x69, 0x94, 0x0b,
-	0x54, 0x71, 0x61, 0xef, 0x06, 0xb1, 0xdb, 0xdd, 0xde, 0x90, 0xa6, 0x01, 0xa5, 0xdd, 0x76, 0x91,
-	0xfb, 0xb3, 0x74, 0x41, 0xac, 0xdc, 0x66, 0x92, 0x5a, 0x89, 0x7f, 0xf0, 0x8c, 0x83, 0x02, 0x12,
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+	0x52, 0xb4, 0xc4, 0xf2, 0xfc, 0x92, 0xa7, 0xb0, 0xc6, 0xdb, 0x0d, 0x4a, 0x90, 0xcb, 0xd3, 0x9d,
+	0xe9, 0x7d, 0xd9, 0xb2, 0xff, 0xfd, 0xed, 0xbb, 0xd2, 0xca, 0x9f, 0xef, 0x4a, 0x2b, 0xbf, 0x0e,
+	0x4b, 0xc2, 0xed, 0xb0, 0x24, 0xfc, 0x3e, 0x2c, 0x09, 0x7f, 0x0f, 0x4b, 0xc2, 0x9b, 0x83, 0xf4,
+	0x7f, 0xac, 0x7b, 0xa3, 0xcd, 0x95, 0xcc, 0xfc, 0x7d, 0xf6, 0x7f, 0x00, 0x00, 0x00, 0xff, 0xff,
+	0x55, 0x78, 0x18, 0x98, 0x00, 0x0f, 0x00, 0x00,
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -1838,22 +1834,30 @@ func (m *Info) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			dAtA[i] = 0x32
 		}
 	}
-	n1, err1 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err1 != nil {
-		return 0, err1
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSnapshots(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x2a
 	}
-	i -= n1
-	i = encodeVarintSnapshots(dAtA, i, uint64(n1))
-	i--
-	dAtA[i] = 0x2a
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt):])
-	if err2 != nil {
-		return 0, err2
+	if m.CreatedAt != nil {
+		{
+			size, err := m.CreatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSnapshots(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x22
 	}
-	i -= n2
-	i = encodeVarintSnapshots(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0x22
 	if m.Kind != 0 {
 		i = encodeVarintSnapshots(dAtA, i, uint64(m.Kind))
 		i--
@@ -2440,10 +2444,14 @@ func (m *Info) Size() (n int) {
 	if m.Kind != 0 {
 		n += 1 + sovSnapshots(uint64(m.Kind))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
-	n += 1 + l + sovSnapshots(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovSnapshots(uint64(l))
+	if m.CreatedAt != nil {
+		l = m.CreatedAt.Size()
+		n += 1 + l + sovSnapshots(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovSnapshots(uint64(l))
+	}
 	if len(m.Labels) > 0 {
 		for k, v := range m.Labels {
 			_ = k
@@ -2782,8 +2790,8 @@ func (this *Info) String() string {
 		`Name:` + fmt.Sprintf("%v", this.Name) + `,`,
 		`Parent:` + fmt.Sprintf("%v", this.Parent) + `,`,
 		`Kind:` + fmt.Sprintf("%v", this.Kind) + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`Labels:` + mapStringForLabels + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
@@ -4459,7 +4467,10 @@ func (m *Info) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.CreatedAt == nil {
+				m.CreatedAt = &types1.Timestamp{}
+			}
+			if err := m.CreatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -4492,7 +4503,10 @@ func (m *Info) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types1.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/snapshots/v1/snapshots.proto b/api/services/snapshots/v1/snapshots.proto
index cfffcc75b..1942161ac 100644
--- a/api/services/snapshots/v1/snapshots.proto
+++ b/api/services/snapshots/v1/snapshots.proto
@@ -113,10 +113,10 @@ message Info {
 	Kind kind = 3;
 
 	// CreatedAt provides the time at which the snapshot was created.
-	google.protobuf.Timestamp created_at = 4 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp created_at = 4;
 
 	// UpdatedAt provides the time the info was last updated.
-	google.protobuf.Timestamp updated_at = 5 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp updated_at = 5;
 
 	// Labels are arbitrary data on snapshots.
 	//
diff --git a/api/services/tasks/v1/tasks.pb.go b/api/services/tasks/v1/tasks.pb.go
index b9df0d9d0..dcc2ff40e 100644
--- a/api/services/tasks/v1/tasks.pb.go
+++ b/api/services/tasks/v1/tasks.pb.go
@@ -11,7 +11,6 @@ import (
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types1 "github.com/gogo/protobuf/types"
 	grpc "google.golang.org/grpc"
 	codes "google.golang.org/grpc/codes"
@@ -21,14 +20,12 @@ import (
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -248,13 +245,13 @@ func (m *DeleteTaskRequest) XXX_DiscardUnknown() {
 var xxx_messageInfo_DeleteTaskRequest proto.InternalMessageInfo
 
 type DeleteResponse struct {
-	ID                   string    `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	Pid                  uint32    `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"`
-	ExitStatus           uint32    `protobuf:"varint,3,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt             time.Time `protobuf:"bytes,4,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	ID                   string            `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	Pid                  uint32            `protobuf:"varint,2,opt,name=pid,proto3" json:"pid,omitempty"`
+	ExitStatus           uint32            `protobuf:"varint,3,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt             *types1.Timestamp `protobuf:"bytes,4,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
 }
 
 func (m *DeleteResponse) Reset()      { *m = DeleteResponse{} }
@@ -1095,11 +1092,11 @@ func (m *WaitRequest) XXX_DiscardUnknown() {
 var xxx_messageInfo_WaitRequest proto.InternalMessageInfo
 
 type WaitResponse struct {
-	ExitStatus           uint32    `protobuf:"varint,1,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt             time.Time `protobuf:"bytes,2,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	ExitStatus           uint32            `protobuf:"varint,1,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt             *types1.Timestamp `protobuf:"bytes,2,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}          `json:"-"`
+	XXX_unrecognized     []byte            `json:"-"`
+	XXX_sizecache        int32             `json:"-"`
 }
 
 func (m *WaitResponse) Reset()      { *m = WaitResponse{} }
@@ -1170,93 +1167,93 @@ func init() {
 }
 
 var fileDescriptor_310e7127b8a26f14 = []byte{
-	// 1372 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xbc, 0x58, 0xcb, 0x6e, 0xdb, 0x46,
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 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -2203,14 +2200,18 @@ func (m *DeleteResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	n3, err3 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err3 != nil {
-		return 0, err3
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTasks(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x22
 	}
-	i -= n3
-	i = encodeVarintTasks(dAtA, i, uint64(n3))
-	i--
-	dAtA[i] = 0x22
 	if m.ExitStatus != 0 {
 		i = encodeVarintTasks(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -3140,14 +3141,18 @@ func (m *WaitResponse) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	n8, err8 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err8 != nil {
-		return 0, err8
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTasks(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x12
 	}
-	i -= n8
-	i = encodeVarintTasks(dAtA, i, uint64(n8))
-	i--
-	dAtA[i] = 0x12
 	if m.ExitStatus != 0 {
 		i = encodeVarintTasks(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -3302,8 +3307,10 @@ func (m *DeleteResponse) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovTasks(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovTasks(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovTasks(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -3727,8 +3734,10 @@ func (m *WaitResponse) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovTasks(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovTasks(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovTasks(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -3819,7 +3828,7 @@ func (this *DeleteResponse) String() string {
 		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
 		`Pid:` + fmt.Sprintf("%v", this.Pid) + `,`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
@@ -4101,7 +4110,7 @@ func (this *WaitResponse) String() string {
 	}
 	s := strings.Join([]string{`&WaitResponse{`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types1.Timestamp", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
@@ -4950,7 +4959,10 @@ func (m *DeleteResponse) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types1.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -7397,7 +7409,10 @@ func (m *WaitResponse) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types1.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/tasks/v1/tasks.proto b/api/services/tasks/v1/tasks.proto
index 8a8616c8e..e35de91ca 100644
--- a/api/services/tasks/v1/tasks.proto
+++ b/api/services/tasks/v1/tasks.proto
@@ -114,7 +114,7 @@ message DeleteResponse {
 	string id = 1;
 	uint32 pid = 2;
 	uint32 exit_status = 3;
-	google.protobuf.Timestamp exited_at = 4 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 4;
 }
 
 message DeleteProcessRequest {
@@ -224,5 +224,5 @@ message WaitRequest {
 
 message WaitResponse {
 	uint32 exit_status = 1;
-	google.protobuf.Timestamp exited_at = 2 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 2;
 }
diff --git a/api/services/ttrpc/events/v1/events.pb.go b/api/services/ttrpc/events/v1/events.pb.go
index 969b60298..33d99a6a8 100644
--- a/api/services/ttrpc/events/v1/events.pb.go
+++ b/api/services/ttrpc/events/v1/events.pb.go
@@ -11,21 +11,18 @@ import (
 	github_com_containerd_typeurl "github.com/containerd/typeurl"
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	io "io"
 	math "math"
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -73,13 +70,13 @@ func (m *ForwardRequest) XXX_DiscardUnknown() {
 var xxx_messageInfo_ForwardRequest proto.InternalMessageInfo
 
 type Envelope struct {
-	Timestamp            time.Time  `protobuf:"bytes,1,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
-	Namespace            string     `protobuf:"bytes,2,opt,name=namespace,proto3" json:"namespace,omitempty"`
-	Topic                string     `protobuf:"bytes,3,opt,name=topic,proto3" json:"topic,omitempty"`
-	Event                *types.Any `protobuf:"bytes,4,opt,name=event,proto3" json:"event,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
-	XXX_unrecognized     []byte     `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
+	Timestamp            *types.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	Namespace            string           `protobuf:"bytes,2,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	Topic                string           `protobuf:"bytes,3,opt,name=topic,proto3" json:"topic,omitempty"`
+	Event                *types.Any       `protobuf:"bytes,4,opt,name=event,proto3" json:"event,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Envelope) Reset()      { *m = Envelope{} }
@@ -124,32 +121,31 @@ func init() {
 }
 
 var fileDescriptor_19f98672016720b5 = []byte{
-	// 392 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x52, 0xb1, 0xae, 0xd3, 0x30,
-	0x14, 0xad, 0xe1, 0xbd, 0x47, 0x6b, 0x24, 0x06, 0xab, 0x42, 0x21, 0xa0, 0xe4, 0xe9, 0xb1, 0x54,
-	0x48, 0xd8, 0x6a, 0xbb, 0xc1, 0x02, 0x15, 0x45, 0x82, 0x31, 0x42, 0x0c, 0x20, 0x21, 0xdc, 0xf4,
-	0x36, 0xb5, 0x94, 0xd8, 0x26, 0x71, 0x82, 0xba, 0xf5, 0x13, 0xf8, 0x18, 0x16, 0xfe, 0xa0, 0x23,
-	0x23, 0x13, 0xd0, 0x7c, 0x09, 0xaa, 0x93, 0x34, 0xd0, 0x0e, 0x54, 0x7a, 0xdb, 0xc9, 0x3d, 0xe7,
-	0xdc, 0x73, 0xef, 0x8d, 0xf1, 0xeb, 0x48, 0x98, 0x65, 0x3e, 0xa3, 0xa1, 0x4a, 0x58, 0xa8, 0xa4,
-	0xe1, 0x42, 0x42, 0x3a, 0xff, 0x1b, 0x72, 0x2d, 0x58, 0x06, 0x69, 0x21, 0x42, 0xc8, 0x98, 0x31,
-	0xa9, 0x0e, 0x19, 0x14, 0x20, 0x4d, 0xc6, 0x8a, 0x61, 0x8d, 0xa8, 0x4e, 0x95, 0x51, 0xe4, 0x61,
-	0xeb, 0xa2, 0x8d, 0x83, 0xd6, 0x0a, 0x6b, 0xa4, 0xc5, 0xd0, 0x7d, 0xf6, 0xdf, 0x40, 0xdb, 0x6c,
-	0x96, 0x2f, 0x98, 0x8e, 0xf3, 0x48, 0x48, 0xb6, 0x10, 0x10, 0xcf, 0x35, 0x37, 0xcb, 0x2a, 0xc6,
-	0xed, 0x47, 0x2a, 0x52, 0x16, 0xb2, 0x1d, 0xaa, 0xab, 0xf7, 0x22, 0xa5, 0xa2, 0x18, 0x5a, 0x37,
-	0x97, 0xab, 0x9a, 0xba, 0x7f, 0x48, 0x41, 0xa2, 0x4d, 0x43, 0xfa, 0x87, 0xa4, 0x11, 0x09, 0x64,
-	0x86, 0x27, 0xba, 0x12, 0x5c, 0xbd, 0xc7, 0x77, 0x5e, 0xaa, 0xf4, 0x33, 0x4f, 0xe7, 0x01, 0x7c,
-	0xca, 0x21, 0x33, 0xe4, 0x15, 0xee, 0x82, 0x2c, 0x20, 0x56, 0x1a, 0x1c, 0x74, 0x89, 0x06, 0xb7,
-	0x47, 0x8f, 0xe9, 0x09, 0xab, 0xd3, 0x69, 0x6d, 0x0a, 0xf6, 0xf6, 0xab, 0xaf, 0x08, 0x77, 0x9b,
-	0x32, 0x99, 0xe0, 0xde, 0x3e, 0xbc, 0x6e, 0xec, 0xd2, 0x6a, 0x3c, 0xda, 0x8c, 0x47, 0xdf, 0x34,
-	0x8a, 0x49, 0x77, 0xf3, 0xd3, 0xef, 0x7c, 0xf9, 0xe5, 0xa3, 0xa0, 0xb5, 0x91, 0x07, 0xb8, 0x27,
-	0x79, 0x02, 0x99, 0xe6, 0x21, 0x38, 0x37, 0x2e, 0xd1, 0xa0, 0x17, 0xb4, 0x05, 0xd2, 0xc7, 0xe7,
-	0x46, 0x69, 0x11, 0x3a, 0x37, 0x2d, 0x53, 0x7d, 0x90, 0x47, 0xf8, 0xdc, 0x8e, 0xea, 0x9c, 0xd9,
-	0xcc, 0xfe, 0x51, 0xe6, 0x73, 0xb9, 0x0a, 0x2a, 0xc9, 0x93, 0xb3, 0xf5, 0x37, 0x1f, 0x8d, 0x3e,
-	0xe2, 0x8b, 0xa9, 0x5d, 0x8e, 0xbc, 0xc5, 0xb7, 0xea, 0xeb, 0x90, 0xf1, 0x49, 0x47, 0xf8, 0xf7,
-	0x96, 0xee, 0xdd, 0xa3, 0xb0, 0xe9, 0xee, 0xe7, 0x4c, 0x3e, 0x6c, 0xb6, 0x5e, 0xe7, 0xc7, 0xd6,
-	0xeb, 0xac, 0x4b, 0x0f, 0x6d, 0x4a, 0x0f, 0x7d, 0x2f, 0x3d, 0xf4, 0xbb, 0xf4, 0xd0, 0xbb, 0x17,
-	0xd7, 0x7a, 0xb1, 0x4f, 0x2b, 0x34, 0xbb, 0xb0, 0x79, 0xe3, 0x3f, 0x01, 0x00, 0x00, 0xff, 0xff,
-	0x22, 0x5e, 0xcf, 0x4e, 0x00, 0x03, 0x00, 0x00,
+	// 379 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xa4, 0x52, 0xc1, 0x0e, 0xd2, 0x40,
+	0x10, 0x65, 0x15, 0x10, 0xd6, 0xc4, 0xc3, 0x86, 0x98, 0x5a, 0x4d, 0x21, 0x78, 0x21, 0x26, 0xee,
+	0x06, 0xb8, 0x18, 0xbd, 0xa8, 0x11, 0x13, 0x3d, 0x36, 0xc6, 0x83, 0x26, 0xc6, 0xa5, 0x0c, 0x65,
+	0x93, 0x76, 0x77, 0x6d, 0xb7, 0x35, 0xdc, 0xf8, 0x1e, 0xff, 0xc0, 0x3f, 0xe0, 0xe8, 0xd1, 0xa3,
+	0xf4, 0x4b, 0x0c, 0xdb, 0x96, 0x2a, 0x1c, 0x24, 0xf1, 0xf6, 0x3a, 0xef, 0xbd, 0x79, 0x33, 0xd3,
+	0xc5, 0x6f, 0x43, 0x61, 0x36, 0xd9, 0x92, 0x06, 0x2a, 0x66, 0x81, 0x92, 0x86, 0x0b, 0x09, 0xc9,
+	0xea, 0x4f, 0xc8, 0xb5, 0x60, 0x29, 0x24, 0xb9, 0x08, 0x20, 0x65, 0xc6, 0x24, 0x3a, 0x60, 0x90,
+	0x83, 0x34, 0x29, 0xcb, 0xa7, 0x15, 0xa2, 0x3a, 0x51, 0x46, 0x91, 0x87, 0x8d, 0x8b, 0xd6, 0x0e,
+	0x5a, 0x29, 0xac, 0x91, 0xe6, 0x53, 0xf7, 0xf9, 0x3f, 0x03, 0x6d, 0xb3, 0x65, 0xb6, 0x66, 0x3a,
+	0xca, 0x42, 0x21, 0xd9, 0x5a, 0x40, 0xb4, 0xd2, 0xdc, 0x6c, 0xca, 0x18, 0x77, 0x10, 0xaa, 0x50,
+	0x59, 0xc8, 0x8e, 0xa8, 0xaa, 0xde, 0x0b, 0x95, 0x0a, 0x23, 0x68, 0xdc, 0x5c, 0x6e, 0x2b, 0xea,
+	0xfe, 0x39, 0x05, 0xb1, 0x36, 0x35, 0x39, 0x3c, 0x27, 0x8d, 0x88, 0x21, 0x35, 0x3c, 0xd6, 0xa5,
+	0x60, 0xfc, 0x11, 0xdf, 0x79, 0xad, 0x92, 0xaf, 0x3c, 0x59, 0xf9, 0xf0, 0x25, 0x83, 0xd4, 0x90,
+	0x37, 0xb8, 0x07, 0x32, 0x87, 0x48, 0x69, 0x70, 0xd0, 0x08, 0x4d, 0x6e, 0xcf, 0x1e, 0xd3, 0x2b,
+	0x56, 0xa7, 0x8b, 0xca, 0xe4, 0x9f, 0xec, 0xe3, 0x6f, 0x08, 0xf7, 0xea, 0x32, 0x79, 0x82, 0xfb,
+	0xa7, 0xf0, 0xaa, 0xb1, 0x4b, 0xcb, 0xf1, 0x68, 0x3d, 0x1e, 0x7d, 0x57, 0x2b, 0xfc, 0x46, 0x4c,
+	0x1e, 0xe0, 0xbe, 0xe4, 0x31, 0xa4, 0x9a, 0x07, 0xe0, 0xdc, 0x18, 0xa1, 0x49, 0xdf, 0x6f, 0x0a,
+	0x64, 0x80, 0x3b, 0x46, 0x69, 0x11, 0x38, 0x37, 0x2d, 0x53, 0x7e, 0x90, 0x47, 0xb8, 0x63, 0x07,
+	0x74, 0xda, 0x36, 0x69, 0x70, 0x91, 0xf4, 0x42, 0x6e, 0xfd, 0x52, 0xf2, 0xb4, 0xbd, 0xfb, 0x3e,
+	0x44, 0xb3, 0xcf, 0xb8, 0xbb, 0xb0, 0x2b, 0x91, 0xf7, 0xf8, 0x56, 0x75, 0x13, 0x32, 0xbf, 0x6a,
+	0xf5, 0xbf, 0x2f, 0xe8, 0xde, 0xbd, 0x08, 0x5b, 0x1c, 0x7f, 0xc9, 0xcb, 0x4f, 0xfb, 0x83, 0xd7,
+	0xfa, 0x79, 0xf0, 0x5a, 0xbb, 0xc2, 0x43, 0xfb, 0xc2, 0x43, 0x3f, 0x0a, 0x0f, 0xfd, 0x2a, 0x3c,
+	0xf4, 0xe1, 0xd5, 0x7f, 0xbd, 0xd3, 0x67, 0x25, 0x5a, 0x76, 0x6d, 0xde, 0xfc, 0x77, 0x00, 0x00,
+	0x00, 0xff, 0xff, 0x87, 0xc7, 0x48, 0x3b, 0xf6, 0x02, 0x00, 0x00,
 }
 
 // Field returns the value for the given fieldpath as a string, if defined.
@@ -268,14 +264,18 @@ func (m *Envelope) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x12
 	}
-	n3, err3 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err3 != nil {
-		return 0, err3
+	if m.Timestamp != nil {
+		{
+			size, err := m.Timestamp.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintEvents(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
 	}
-	i -= n3
-	i = encodeVarintEvents(dAtA, i, uint64(n3))
-	i--
-	dAtA[i] = 0xa
 	return len(dAtA) - i, nil
 }
 
@@ -312,8 +312,10 @@ func (m *Envelope) Size() (n int) {
 	}
 	var l int
 	_ = l
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp)
-	n += 1 + l + sovEvents(uint64(l))
+	if m.Timestamp != nil {
+		l = m.Timestamp.Size()
+		n += 1 + l + sovEvents(uint64(l))
+	}
 	l = len(m.Namespace)
 	if l > 0 {
 		n += 1 + l + sovEvents(uint64(l))
@@ -354,7 +356,7 @@ func (this *Envelope) String() string {
 		return "nil"
 	}
 	s := strings.Join([]string{`&Envelope{`,
-		`Timestamp:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Timestamp), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`Timestamp:` + strings.Replace(fmt.Sprintf("%v", this.Timestamp), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Namespace:` + fmt.Sprintf("%v", this.Namespace) + `,`,
 		`Topic:` + fmt.Sprintf("%v", this.Topic) + `,`,
 		`Event:` + strings.Replace(fmt.Sprintf("%v", this.Event), "Any", "types.Any", 1) + `,`,
@@ -550,7 +552,10 @@ func (m *Envelope) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.Timestamp, dAtA[iNdEx:postIndex]); err != nil {
+			if m.Timestamp == nil {
+				m.Timestamp = &types.Timestamp{}
+			}
+			if err := m.Timestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/services/ttrpc/events/v1/events.proto b/api/services/ttrpc/events/v1/events.proto
index 7f3e1859b..64e47f47f 100644
--- a/api/services/ttrpc/events/v1/events.proto
+++ b/api/services/ttrpc/events/v1/events.proto
@@ -41,7 +41,7 @@ message ForwardRequest {
 
 message Envelope {
 	option (containerd.plugin.fieldpath) = true;
-	google.protobuf.Timestamp timestamp = 1 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp timestamp = 1;
 	string namespace = 2;
 	string topic = 3;
 	google.protobuf.Any event = 4;
diff --git a/api/types/metrics.pb.go b/api/types/metrics.pb.go
index a0d8651bc..eb2b1e749 100644
--- a/api/types/metrics.pb.go
+++ b/api/types/metrics.pb.go
@@ -7,21 +7,18 @@ import (
 	fmt "fmt"
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	io "io"
 	math "math"
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -30,12 +27,12 @@ var _ = time.Kitchen
 const _ = proto.GoGoProtoPackageIsVersion3 // please upgrade the proto package
 
 type Metric struct {
-	Timestamp            time.Time  `protobuf:"bytes,1,opt,name=timestamp,proto3,stdtime" json:"timestamp"`
-	ID                   string     `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
-	Data                 *types.Any `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
-	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
-	XXX_unrecognized     []byte     `json:"-"`
-	XXX_sizecache        int32      `json:"-"`
+	Timestamp            *types.Timestamp `protobuf:"bytes,1,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	ID                   string           `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
+	Data                 *types.Any       `protobuf:"bytes,3,opt,name=data,proto3" json:"data,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Metric) Reset()      { *m = Metric{} }
@@ -79,7 +76,7 @@ func init() {
 }
 
 var fileDescriptor_8d594d87edf6e6bc = []byte{
-	// 256 bytes of a gzipped FileDescriptorProto
+	// 246 bytes of a gzipped FileDescriptorProto
 	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xb2, 0x48, 0xcf, 0x2c, 0xc9,
 	0x28, 0x4d, 0xd2, 0x4b, 0xce, 0xcf, 0xd5, 0x4f, 0xce, 0xcf, 0x2b, 0x49, 0xcc, 0xcc, 0x4b, 0x2d,
 	0x4a, 0x41, 0x66, 0x26, 0x16, 0x64, 0xea, 0x97, 0x54, 0x16, 0xa4, 0x16, 0xeb, 0xe7, 0xa6, 0x96,
@@ -87,15 +84,15 @@ var fileDescriptor_8d594d87edf6e6bc = []byte{
 	0xe5, 0xa5, 0x44, 0xd2, 0xf3, 0xd3, 0xf3, 0xc1, 0x92, 0xfa, 0x20, 0x16, 0x44, 0x9d, 0x94, 0x64,
 	0x7a, 0x7e, 0x7e, 0x7a, 0x4e, 0xaa, 0x3e, 0x98, 0x97, 0x54, 0x9a, 0xa6, 0x9f, 0x98, 0x57, 0x09,
 	0x95, 0x92, 0x47, 0x97, 0x2a, 0xc9, 0xcc, 0x4d, 0x2d, 0x2e, 0x49, 0xcc, 0x2d, 0x80, 0x28, 0x50,
-	0xea, 0x63, 0xe4, 0x62, 0xf3, 0x05, 0xdb, 0x2a, 0xe4, 0xc4, 0xc5, 0x09, 0x97, 0x95, 0x60, 0x54,
-	0x60, 0xd4, 0xe0, 0x36, 0x92, 0xd2, 0x83, 0xe8, 0xd7, 0x83, 0xe9, 0xd7, 0x0b, 0x81, 0xa9, 0x70,
-	0xe2, 0x38, 0x71, 0x4f, 0x9e, 0x61, 0xc2, 0x7d, 0x79, 0xc6, 0x20, 0x84, 0x36, 0x21, 0x31, 0x2e,
-	0xa6, 0xcc, 0x14, 0x09, 0x26, 0x05, 0x46, 0x0d, 0x4e, 0x27, 0xb6, 0x47, 0xf7, 0xe4, 0x99, 0x3c,
-	0x5d, 0x82, 0x98, 0x32, 0x53, 0x84, 0x34, 0xb8, 0x58, 0x52, 0x12, 0x4b, 0x12, 0x25, 0x98, 0xc1,
-	0xc6, 0x8a, 0x60, 0x18, 0xeb, 0x98, 0x57, 0x19, 0x04, 0x56, 0xe1, 0xe4, 0x75, 0xe2, 0xa1, 0x1c,
-	0xc3, 0x8d, 0x87, 0x72, 0x0c, 0x0d, 0x8f, 0xe4, 0x18, 0x4f, 0x3c, 0x92, 0x63, 0xbc, 0xf0, 0x48,
-	0x8e, 0xf1, 0xc1, 0x23, 0x39, 0xc6, 0x28, 0x03, 0xe2, 0x03, 0xd2, 0x1a, 0x4c, 0x26, 0xb1, 0x81,
-	0xcd, 0x37, 0x06, 0x04, 0x00, 0x00, 0xff, 0xff, 0xf8, 0x51, 0x36, 0x74, 0x83, 0x01, 0x00, 0x00,
+	0x6a, 0x61, 0xe4, 0x62, 0xf3, 0x05, 0xdb, 0x2a, 0x64, 0xc1, 0xc5, 0x09, 0x97, 0x95, 0x60, 0x54,
+	0x60, 0xd4, 0xe0, 0x36, 0x92, 0xd2, 0x83, 0xe8, 0xd7, 0x83, 0xe9, 0xd7, 0x0b, 0x81, 0xa9, 0x08,
+	0x42, 0x28, 0x16, 0x12, 0xe3, 0x62, 0xca, 0x4c, 0x91, 0x60, 0x52, 0x60, 0xd4, 0xe0, 0x74, 0x62,
+	0x7b, 0x74, 0x4f, 0x9e, 0xc9, 0xd3, 0x25, 0x88, 0x29, 0x33, 0x45, 0x48, 0x83, 0x8b, 0x25, 0x25,
+	0xb1, 0x24, 0x51, 0x82, 0x19, 0x6c, 0x98, 0x08, 0x86, 0x61, 0x8e, 0x79, 0x95, 0x41, 0x60, 0x15,
+	0x4e, 0x5e, 0x27, 0x1e, 0xca, 0x31, 0xdc, 0x78, 0x28, 0xc7, 0xd0, 0xf0, 0x48, 0x8e, 0xf1, 0xc4,
+	0x23, 0x39, 0xc6, 0x0b, 0x8f, 0xe4, 0x18, 0x1f, 0x3c, 0x92, 0x63, 0x8c, 0x32, 0x20, 0x3e, 0xf8,
+	0xac, 0xc1, 0x64, 0x12, 0x1b, 0xd8, 0x7c, 0x63, 0x40, 0x00, 0x00, 0x00, 0xff, 0xff, 0x6c, 0x28,
+	0x99, 0xa7, 0x79, 0x01, 0x00, 0x00,
 }
 
 func (m *Metric) Marshal() (dAtA []byte, err error) {
@@ -141,14 +138,18 @@ func (m *Metric) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i--
 		dAtA[i] = 0x12
 	}
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.Timestamp, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp):])
-	if err2 != nil {
-		return 0, err2
+	if m.Timestamp != nil {
+		{
+			size, err := m.Timestamp.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintMetrics(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0xa
 	}
-	i -= n2
-	i = encodeVarintMetrics(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0xa
 	return len(dAtA) - i, nil
 }
 
@@ -169,8 +170,10 @@ func (m *Metric) Size() (n int) {
 	}
 	var l int
 	_ = l
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.Timestamp)
-	n += 1 + l + sovMetrics(uint64(l))
+	if m.Timestamp != nil {
+		l = m.Timestamp.Size()
+		n += 1 + l + sovMetrics(uint64(l))
+	}
 	l = len(m.ID)
 	if l > 0 {
 		n += 1 + l + sovMetrics(uint64(l))
@@ -196,7 +199,7 @@ func (this *Metric) String() string {
 		return "nil"
 	}
 	s := strings.Join([]string{`&Metric{`,
-		`Timestamp:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Timestamp), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`Timestamp:` + strings.Replace(fmt.Sprintf("%v", this.Timestamp), "Timestamp", "types.Timestamp", 1) + `,`,
 		`ID:` + fmt.Sprintf("%v", this.ID) + `,`,
 		`Data:` + strings.Replace(fmt.Sprintf("%v", this.Data), "Any", "types.Any", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
@@ -270,7 +273,10 @@ func (m *Metric) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.Timestamp, dAtA[iNdEx:postIndex]); err != nil {
+			if m.Timestamp == nil {
+				m.Timestamp = &types.Timestamp{}
+			}
+			if err := m.Timestamp.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/types/metrics.proto b/api/types/metrics.proto
index 7be45e868..2f07d4eac 100644
--- a/api/types/metrics.proto
+++ b/api/types/metrics.proto
@@ -25,7 +25,7 @@ import "google/protobuf/timestamp.proto";
 option go_package = "github.com/containerd/containerd/api/types;types";
 
 message Metric {
-	google.protobuf.Timestamp timestamp = 1 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp timestamp = 1;
 	string id = 2;
 	google.protobuf.Any data = 3;
 }
diff --git a/api/types/sandbox.pb.go b/api/types/sandbox.pb.go
index 5bd7b8e7e..bf20ce509 100644
--- a/api/types/sandbox.pb.go
+++ b/api/types/sandbox.pb.go
@@ -7,21 +7,18 @@ import (
 	fmt "fmt"
 	proto "github.com/gogo/protobuf/proto"
 	github_com_gogo_protobuf_sortkeys "github.com/gogo/protobuf/sortkeys"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	io "io"
 	math "math"
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -42,9 +39,9 @@ type Sandbox struct {
 	// Labels provides an area to include arbitrary data on containers.
 	Labels map[string]string `protobuf:"bytes,4,rep,name=labels,proto3" json:"labels" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// CreatedAt is the time the container was first created.
-	CreatedAt time.Time `protobuf:"bytes,5,opt,name=created_at,json=createdAt,proto3,stdtime" json:"created_at"`
+	CreatedAt *types.Timestamp `protobuf:"bytes,5,opt,name=created_at,json=createdAt,proto3" json:"created_at,omitempty"`
 	// UpdatedAt is the last time the container was mutated.
-	UpdatedAt time.Time `protobuf:"bytes,6,opt,name=updated_at,json=updatedAt,proto3,stdtime" json:"updated_at"`
+	UpdatedAt *types.Timestamp `protobuf:"bytes,6,opt,name=updated_at,json=updatedAt,proto3" json:"updated_at,omitempty"`
 	// Extensions allow clients to provide optional blobs that can be handled by runtime.
 	Extensions           map[string]types.Any `protobuf:"bytes,7,rep,name=extensions,proto3" json:"extensions" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	XXX_NoUnkeyedLiteral struct{}             `json:"-"`
@@ -139,36 +136,35 @@ func init() {
 }
 
 var fileDescriptor_f2257af6cf851f1c = []byte{
-	// 454 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x94, 0x53, 0x4f, 0x8b, 0xd3, 0x40,
-	0x14, 0xef, 0xf4, 0x5f, 0xcc, 0x2b, 0xe2, 0x32, 0xf4, 0x10, 0x73, 0x48, 0xab, 0x20, 0x54, 0x91,
-	0x89, 0xac, 0x97, 0x55, 0x4f, 0xed, 0xba, 0x87, 0x15, 0x45, 0xc8, 0x7a, 0x10, 0x2f, 0xcb, 0xa4,
-	0x19, 0x63, 0xb0, 0x9d, 0x09, 0xc9, 0x44, 0x36, 0x37, 0x3f, 0x82, 0xdf, 0xc1, 0x2f, 0xd3, 0xa3,
-	0x47, 0x4f, 0xab, 0x9b, 0x4f, 0x22, 0x99, 0x99, 0xd8, 0x50, 0xad, 0xb8, 0x97, 0xf0, 0x86, 0xf7,
-	0xfb, 0xf7, 0xde, 0x23, 0x70, 0x14, 0x27, 0xf2, 0x43, 0x11, 0x92, 0xa5, 0x58, 0xfb, 0x4b, 0xc1,
-	0x25, 0x4d, 0x38, 0xcb, 0xa2, 0x76, 0x49, 0xd3, 0xc4, 0x97, 0x65, 0xca, 0x72, 0x3f, 0xa7, 0x3c,
-	0x0a, 0xc5, 0x05, 0x49, 0x33, 0x21, 0x05, 0x3e, 0xd8, 0x62, 0x88, 0xea, 0xbb, 0xe3, 0x58, 0xc4,
-	0x42, 0x35, 0xfd, 0xba, 0xd2, 0x38, 0xf7, 0x76, 0x2c, 0x44, 0xbc, 0x62, 0xbe, 0x7a, 0x85, 0xc5,
-	0x7b, 0x9f, 0xf2, 0xd2, 0xb4, 0x26, 0xbb, 0x2d, 0x99, 0xac, 0x59, 0x2e, 0xe9, 0x3a, 0xd5, 0x80,
-	0xbb, 0x5f, 0x07, 0x60, 0x9d, 0x69, 0x57, 0xfc, 0x10, 0xc0, 0x04, 0x38, 0x4f, 0x22, 0x07, 0x4d,
-	0xd1, 0xcc, 0x5e, 0xdc, 0xac, 0x2e, 0x27, 0xb6, 0x01, 0x9c, 0x3e, 0x0f, 0x6c, 0x03, 0x38, 0x8d,
-	0xf0, 0x1c, 0xac, 0xac, 0xe0, 0xb5, 0x9e, 0xd3, 0x9d, 0xa2, 0xd9, 0xe8, 0xf0, 0x0e, 0xd9, 0xcd,
-	0x4b, 0x0c, 0x91, 0x04, 0x1a, 0xb8, 0xe8, 0x6f, 0x2e, 0x27, 0x9d, 0xa0, 0xe1, 0xe1, 0x19, 0xf4,
-	0xf3, 0x94, 0x2d, 0x9d, 0x9e, 0xe2, 0x8f, 0x89, 0x0e, 0x4b, 0x9a, 0xb0, 0x64, 0xce, 0xcb, 0x40,
-	0x21, 0xf0, 0x31, 0x0c, 0x57, 0x34, 0x64, 0xab, 0xdc, 0xe9, 0x4f, 0x7b, 0xb3, 0xd1, 0xe1, 0xbd,
-	0xfd, 0x5e, 0x2f, 0x15, 0xee, 0x84, 0xcb, 0xac, 0x34, 0x7e, 0x86, 0x8a, 0x8f, 0x01, 0x96, 0x19,
-	0xa3, 0x92, 0x45, 0xe7, 0x54, 0x3a, 0x03, 0x65, 0xea, 0xfe, 0x61, 0xfa, 0xa6, 0xd9, 0xd0, 0xe2,
-	0x46, 0xcd, 0xfe, 0xf2, 0x63, 0x82, 0x02, 0xdb, 0xf0, 0xe6, 0xb2, 0x16, 0x29, 0xd2, 0xa8, 0x11,
-	0x19, 0x5e, 0x47, 0xc4, 0xf0, 0xe6, 0x12, 0xbf, 0x06, 0x60, 0x17, 0x92, 0xf1, 0x3c, 0x11, 0x3c,
-	0x77, 0x2c, 0x35, 0xd2, 0xfd, 0xfd, 0x23, 0x9d, 0xfc, 0xc6, 0xb6, 0xc7, 0x6a, 0x49, 0xb8, 0xaf,
-	0xc0, 0x32, 0x3b, 0xc6, 0x18, 0xfa, 0x9c, 0xae, 0x99, 0xbe, 0x5f, 0xa0, 0x6a, 0x4c, 0xc0, 0x12,
-	0xa9, 0x54, 0x66, 0xdd, 0x7f, 0xec, 0xba, 0x01, 0xb9, 0x4f, 0x60, 0xd4, 0x5a, 0x23, 0x3e, 0x80,
-	0xde, 0x47, 0x56, 0x1a, 0xc5, 0xba, 0xc4, 0x63, 0x18, 0x7c, 0xa2, 0xab, 0x42, 0x9f, 0xde, 0x0e,
-	0xf4, 0xe3, 0x69, 0xf7, 0x08, 0xb9, 0x67, 0x70, 0x6b, 0x27, 0xee, 0x5f, 0xe8, 0x0f, 0xda, 0xf4,
-	0x7d, 0x69, 0xb6, 0xa2, 0x8b, 0x17, 0x9b, 0x2b, 0xaf, 0xf3, 0xfd, 0xca, 0xeb, 0x7c, 0xae, 0x3c,
-	0xb4, 0xa9, 0x3c, 0xf4, 0xad, 0xf2, 0xd0, 0xcf, 0xca, 0x43, 0xef, 0x1e, 0xfd, 0xff, 0xdf, 0xf5,
-	0x4c, 0x7d, 0xdf, 0x76, 0xc2, 0xa1, 0xb2, 0x79, 0xfc, 0x2b, 0x00, 0x00, 0xff, 0xff, 0x90, 0x58,
-	0x3c, 0xe1, 0x9a, 0x03, 0x00, 0x00,
+	// 446 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x8c, 0x93, 0x4f, 0x8b, 0xd3, 0x40,
+	0x18, 0xc6, 0x3b, 0xfd, 0x17, 0xf2, 0x16, 0x71, 0x19, 0x7a, 0x88, 0x39, 0xa4, 0x55, 0x10, 0xaa,
+	0xc8, 0x44, 0xd6, 0xcb, 0xae, 0x9e, 0x5a, 0xdd, 0xc3, 0x8a, 0x22, 0x64, 0x3d, 0x88, 0x97, 0x65,
+	0xd2, 0x8c, 0x31, 0xd8, 0xcc, 0x84, 0x64, 0x22, 0x9b, 0x9b, 0xdf, 0xc0, 0xaf, 0xd5, 0xa3, 0x47,
+	0x4f, 0x8b, 0x9b, 0x4f, 0x22, 0x99, 0x99, 0xd8, 0x50, 0xad, 0x7a, 0x09, 0xef, 0xf0, 0xfe, 0x9e,
+	0xf7, 0x79, 0xf2, 0x0e, 0x03, 0x27, 0x71, 0x22, 0x3f, 0x96, 0x21, 0x59, 0x8b, 0xd4, 0x5f, 0x0b,
+	0x2e, 0x69, 0xc2, 0x59, 0x1e, 0x75, 0x4b, 0x9a, 0x25, 0xbe, 0xac, 0x32, 0x56, 0xf8, 0x05, 0xe5,
+	0x51, 0x28, 0xae, 0x48, 0x96, 0x0b, 0x29, 0xf0, 0xd1, 0x8e, 0x21, 0xaa, 0xef, 0x4e, 0x63, 0x11,
+	0x0b, 0xd5, 0xf4, 0x9b, 0x4a, 0x73, 0xee, 0x9d, 0x58, 0x88, 0x78, 0xc3, 0x7c, 0x75, 0x0a, 0xcb,
+	0x0f, 0x3e, 0xe5, 0x95, 0x69, 0xcd, 0xf6, 0x5b, 0x32, 0x49, 0x59, 0x21, 0x69, 0x9a, 0x69, 0xe0,
+	0xde, 0xd7, 0x11, 0x58, 0x17, 0xda, 0x15, 0x3f, 0x02, 0x30, 0x01, 0x2e, 0x93, 0xc8, 0x41, 0x73,
+	0xb4, 0xb0, 0x57, 0xb7, 0xea, 0xeb, 0x99, 0x6d, 0x80, 0xf3, 0x17, 0x81, 0x6d, 0x80, 0xf3, 0x08,
+	0x2f, 0xc1, 0xca, 0x4b, 0xde, 0xcc, 0x73, 0xfa, 0x73, 0xb4, 0x98, 0x1c, 0xdf, 0x25, 0xfb, 0x79,
+	0x89, 0x11, 0x92, 0x40, 0x83, 0xab, 0xe1, 0xf6, 0x7a, 0xd6, 0x0b, 0x5a, 0x1d, 0x5e, 0xc0, 0xb0,
+	0xc8, 0xd8, 0xda, 0x19, 0x28, 0xfd, 0x94, 0xe8, 0xb0, 0xa4, 0x0d, 0x4b, 0x96, 0xbc, 0x0a, 0x14,
+	0x81, 0x9f, 0xc3, 0x78, 0x43, 0x43, 0xb6, 0x29, 0x9c, 0xe1, 0x7c, 0xb0, 0x98, 0x1c, 0xdf, 0x3f,
+	0xec, 0xf5, 0x4a, 0x71, 0x67, 0x5c, 0xe6, 0x95, 0xf1, 0x33, 0x52, 0x7c, 0x0a, 0xb0, 0xce, 0x19,
+	0x95, 0x2c, 0xba, 0xa4, 0xd2, 0x19, 0x29, 0x53, 0xf7, 0x37, 0xd3, 0xb7, 0xed, 0x86, 0x02, 0xdb,
+	0xd0, 0x4b, 0xd9, 0x48, 0xcb, 0x2c, 0x6a, 0xa5, 0xe3, 0x7f, 0x4b, 0x0d, 0xbd, 0x94, 0xf8, 0x0d,
+	0x00, 0xbb, 0x92, 0x8c, 0x17, 0x89, 0xe0, 0x85, 0x63, 0xa9, 0xf8, 0x0f, 0x0e, 0xc7, 0x3f, 0xfb,
+	0xc5, 0x76, 0x7f, 0xa1, 0x33, 0xc2, 0x7d, 0x0d, 0x96, 0xd9, 0x27, 0xc6, 0x30, 0xe4, 0x34, 0x65,
+	0xfa, 0xae, 0x02, 0x55, 0x63, 0x02, 0x96, 0xc8, 0xa4, 0x32, 0xeb, 0xff, 0x65, 0xaf, 0x2d, 0xe4,
+	0x9e, 0xc2, 0xa4, 0xb3, 0x32, 0x7c, 0x04, 0x83, 0x4f, 0xac, 0x32, 0x13, 0x9b, 0x12, 0x4f, 0x61,
+	0xf4, 0x99, 0x6e, 0x4a, 0x7d, 0xcd, 0x76, 0xa0, 0x0f, 0x4f, 0xfb, 0x27, 0xc8, 0xbd, 0x80, 0xdb,
+	0x7b, 0x71, 0xff, 0x20, 0x7f, 0xd8, 0x95, 0x1f, 0x4a, 0xb3, 0x1b, 0xba, 0x7a, 0xb9, 0xbd, 0xf1,
+	0x7a, 0xdf, 0x6f, 0xbc, 0xde, 0x97, 0xda, 0x43, 0xdb, 0xda, 0x43, 0xdf, 0x6a, 0x0f, 0xfd, 0xa8,
+	0x3d, 0xf4, 0xfe, 0xf1, 0xff, 0xbf, 0xa4, 0x67, 0xea, 0xfb, 0xae, 0x17, 0x8e, 0x95, 0xcd, 0x93,
+	0x9f, 0x01, 0x00, 0x00, 0xff, 0xff, 0x59, 0xb4, 0xf4, 0x66, 0x86, 0x03, 0x00, 0x00,
 }
 
 func (m *Sandbox) Marshal() (dAtA []byte, err error) {
@@ -219,22 +215,30 @@ func (m *Sandbox) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 			dAtA[i] = 0x3a
 		}
 	}
-	n2, err2 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.UpdatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt):])
-	if err2 != nil {
-		return 0, err2
+	if m.UpdatedAt != nil {
+		{
+			size, err := m.UpdatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSandbox(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x32
 	}
-	i -= n2
-	i = encodeVarintSandbox(dAtA, i, uint64(n2))
-	i--
-	dAtA[i] = 0x32
-	n3, err3 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.CreatedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt):])
-	if err3 != nil {
-		return 0, err3
+	if m.CreatedAt != nil {
+		{
+			size, err := m.CreatedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintSandbox(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x2a
 	}
-	i -= n3
-	i = encodeVarintSandbox(dAtA, i, uint64(n3))
-	i--
-	dAtA[i] = 0x2a
 	if len(m.Labels) > 0 {
 		for k := range m.Labels {
 			v := m.Labels[k]
@@ -367,10 +371,14 @@ func (m *Sandbox) Size() (n int) {
 			n += mapEntrySize + 1 + sovSandbox(uint64(mapEntrySize))
 		}
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.CreatedAt)
-	n += 1 + l + sovSandbox(uint64(l))
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.UpdatedAt)
-	n += 1 + l + sovSandbox(uint64(l))
+	if m.CreatedAt != nil {
+		l = m.CreatedAt.Size()
+		n += 1 + l + sovSandbox(uint64(l))
+	}
+	if m.UpdatedAt != nil {
+		l = m.UpdatedAt.Size()
+		n += 1 + l + sovSandbox(uint64(l))
+	}
 	if len(m.Extensions) > 0 {
 		for k, v := range m.Extensions {
 			_ = k
@@ -441,8 +449,8 @@ func (this *Sandbox) String() string {
 		`Runtime:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Runtime), "Sandbox_Runtime", "Sandbox_Runtime", 1), `&`, ``, 1) + `,`,
 		`Spec:` + strings.Replace(fmt.Sprintf("%v", this.Spec), "Any", "types.Any", 1) + `,`,
 		`Labels:` + mapStringForLabels + `,`,
-		`CreatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
-		`UpdatedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`CreatedAt:` + strings.Replace(fmt.Sprintf("%v", this.CreatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
+		`UpdatedAt:` + strings.Replace(fmt.Sprintf("%v", this.UpdatedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`Extensions:` + mapStringForExtensions + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
@@ -755,7 +763,10 @@ func (m *Sandbox) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.CreatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.CreatedAt == nil {
+				m.CreatedAt = &types.Timestamp{}
+			}
+			if err := m.CreatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
@@ -788,7 +799,10 @@ func (m *Sandbox) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.UpdatedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.UpdatedAt == nil {
+				m.UpdatedAt = &types.Timestamp{}
+			}
+			if err := m.UpdatedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/types/sandbox.proto b/api/types/sandbox.proto
index 0a2cf7a5b..c572db403 100644
--- a/api/types/sandbox.proto
+++ b/api/types/sandbox.proto
@@ -44,9 +44,9 @@ message Sandbox {
 	// Labels provides an area to include arbitrary data on containers.
 	map<string, string> labels  = 4 [(gogoproto.nullable) = false];
 	// CreatedAt is the time the container was first created.
-	google.protobuf.Timestamp created_at = 5 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp created_at = 5;
 	// UpdatedAt is the last time the container was mutated.
-	google.protobuf.Timestamp updated_at = 6 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp updated_at = 6;
 	// Extensions allow clients to provide optional blobs that can be handled by runtime.
 	map<string, google.protobuf.Any> extensions = 7 [(gogoproto.nullable) = false];
 }
diff --git a/api/types/task/task.pb.go b/api/types/task/task.pb.go
index 419566c39..be19eb981 100644
--- a/api/types/task/task.pb.go
+++ b/api/types/task/task.pb.go
@@ -7,21 +7,18 @@ import (
 	fmt "fmt"
 	_ "github.com/gogo/protobuf/gogoproto"
 	proto "github.com/gogo/protobuf/proto"
-	github_com_gogo_protobuf_types "github.com/gogo/protobuf/types"
 	types "github.com/gogo/protobuf/types"
 	io "io"
 	math "math"
 	math_bits "math/bits"
 	reflect "reflect"
 	strings "strings"
-	time "time"
 )
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
 var _ = fmt.Errorf
 var _ = math.Inf
-var _ = time.Kitchen
 
 // This is a compile-time assertion to ensure that this generated file
 // is compatible with the proto package it is being compiled against.
@@ -67,19 +64,19 @@ func (Status) EnumDescriptor() ([]byte, []int) {
 }
 
 type Process struct {
-	ContainerID          string    `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	ID                   string    `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
-	Pid                  uint32    `protobuf:"varint,3,opt,name=pid,proto3" json:"pid,omitempty"`
-	Status               Status    `protobuf:"varint,4,opt,name=status,proto3,enum=containerd.v1.types.Status" json:"status,omitempty"`
-	Stdin                string    `protobuf:"bytes,5,opt,name=stdin,proto3" json:"stdin,omitempty"`
-	Stdout               string    `protobuf:"bytes,6,opt,name=stdout,proto3" json:"stdout,omitempty"`
-	Stderr               string    `protobuf:"bytes,7,opt,name=stderr,proto3" json:"stderr,omitempty"`
-	Terminal             bool      `protobuf:"varint,8,opt,name=terminal,proto3" json:"terminal,omitempty"`
-	ExitStatus           uint32    `protobuf:"varint,9,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
-	ExitedAt             time.Time `protobuf:"bytes,10,opt,name=exited_at,json=exitedAt,proto3,stdtime" json:"exited_at"`
-	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
-	XXX_unrecognized     []byte    `json:"-"`
-	XXX_sizecache        int32     `json:"-"`
+	ContainerID          string           `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	ID                   string           `protobuf:"bytes,2,opt,name=id,proto3" json:"id,omitempty"`
+	Pid                  uint32           `protobuf:"varint,3,opt,name=pid,proto3" json:"pid,omitempty"`
+	Status               Status           `protobuf:"varint,4,opt,name=status,proto3,enum=containerd.v1.types.Status" json:"status,omitempty"`
+	Stdin                string           `protobuf:"bytes,5,opt,name=stdin,proto3" json:"stdin,omitempty"`
+	Stdout               string           `protobuf:"bytes,6,opt,name=stdout,proto3" json:"stdout,omitempty"`
+	Stderr               string           `protobuf:"bytes,7,opt,name=stderr,proto3" json:"stderr,omitempty"`
+	Terminal             bool             `protobuf:"varint,8,opt,name=terminal,proto3" json:"terminal,omitempty"`
+	ExitStatus           uint32           `protobuf:"varint,9,opt,name=exit_status,json=exitStatus,proto3" json:"exit_status,omitempty"`
+	ExitedAt             *types.Timestamp `protobuf:"bytes,10,opt,name=exited_at,json=exitedAt,proto3" json:"exited_at,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}         `json:"-"`
+	XXX_unrecognized     []byte           `json:"-"`
+	XXX_sizecache        int32            `json:"-"`
 }
 
 func (m *Process) Reset()      { *m = Process{} }
@@ -169,37 +166,36 @@ func init() {
 }
 
 var fileDescriptor_391ef18c8ab0dc16 = []byte{
-	// 470 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x90, 0x4f, 0x8f, 0xd2, 0x40,
-	0x18, 0xc6, 0x99, 0x02, 0x05, 0xa6, 0xfe, 0x69, 0x46, 0xb2, 0x19, 0x31, 0x69, 0xc9, 0x9e, 0x1a,
-	0x0f, 0x6d, 0x64, 0x6f, 0xde, 0x60, 0x4b, 0x4c, 0x63, 0xd2, 0x25, 0x03, 0xc4, 0x23, 0x29, 0x74,
-	0xa8, 0x13, 0x97, 0x4e, 0xd3, 0x0e, 0x46, 0x6e, 0x7e, 0x04, 0x3f, 0x16, 0x47, 0x8f, 0x9e, 0xd0,
-	0xed, 0x27, 0x31, 0x33, 0x2d, 0xac, 0x51, 0x2f, 0xcd, 0xfb, 0x3c, 0xef, 0xaf, 0x33, 0xcf, 0x3c,
-	0xf0, 0x6d, 0xc2, 0xc4, 0xc7, 0xfd, 0xda, 0xdd, 0xf0, 0x9d, 0xb7, 0xe1, 0xa9, 0x88, 0x58, 0x4a,
-	0xf3, 0xf8, 0xcf, 0x31, 0xca, 0x98, 0x27, 0x0e, 0x19, 0x2d, 0x3c, 0x11, 0x15, 0x9f, 0xd4, 0xc7,
-	0xcd, 0x72, 0x2e, 0x38, 0x7a, 0xf1, 0x48, 0xb9, 0x9f, 0xdf, 0xb8, 0x0a, 0x1a, 0xf4, 0x13, 0x9e,
-	0x70, 0xb5, 0xf7, 0xe4, 0x54, 0xa1, 0x03, 0x3b, 0xe1, 0x3c, 0xb9, 0xa7, 0x9e, 0x52, 0xeb, 0xfd,
-	0xd6, 0x13, 0x6c, 0x47, 0x0b, 0x11, 0xed, 0xb2, 0x1a, 0x78, 0xf9, 0x37, 0x10, 0xa5, 0x87, 0x6a,
-	0x75, 0x5d, 0x6a, 0xb0, 0x33, 0xcb, 0xf9, 0x86, 0x16, 0x05, 0x1a, 0xc1, 0x27, 0x97, 0x4b, 0x57,
-	0x2c, 0xc6, 0x60, 0x08, 0x9c, 0xde, 0xe4, 0x79, 0x79, 0xb2, 0x8d, 0xdb, 0xb3, 0x1f, 0xf8, 0xc4,
-	0xb8, 0x40, 0x41, 0x8c, 0xae, 0xa0, 0xc6, 0x62, 0xac, 0x29, 0x52, 0x2f, 0x4f, 0xb6, 0x16, 0xf8,
-	0x44, 0x63, 0x31, 0x32, 0x61, 0x33, 0x63, 0x31, 0x6e, 0x0e, 0x81, 0xf3, 0x94, 0xc8, 0x11, 0xdd,
-	0x40, 0xbd, 0x10, 0x91, 0xd8, 0x17, 0xb8, 0x35, 0x04, 0xce, 0xb3, 0xd1, 0x2b, 0xf7, 0x3f, 0x2f,
-	0x74, 0xe7, 0x0a, 0x21, 0x35, 0x8a, 0xfa, 0xb0, 0x5d, 0x88, 0x98, 0xa5, 0xb8, 0x2d, 0x6f, 0x20,
-	0x95, 0x40, 0x57, 0xf2, 0xa8, 0x98, 0xef, 0x05, 0xd6, 0x95, 0x5d, 0xab, 0xda, 0xa7, 0x79, 0x8e,
-	0x3b, 0x17, 0x9f, 0xe6, 0x39, 0x1a, 0xc0, 0xae, 0xa0, 0xf9, 0x8e, 0xa5, 0xd1, 0x3d, 0xee, 0x0e,
-	0x81, 0xd3, 0x25, 0x17, 0x8d, 0x6c, 0x68, 0xd0, 0x2f, 0x4c, 0xac, 0xea, 0x6c, 0x3d, 0x15, 0x18,
-	0x4a, 0xab, 0x8a, 0x82, 0xc6, 0xb0, 0x27, 0x15, 0x8d, 0x57, 0x91, 0xc0, 0x70, 0x08, 0x1c, 0x63,
-	0x34, 0x70, 0xab, 0x42, 0xdd, 0x73, 0xa1, 0xee, 0xe2, 0xdc, 0xf8, 0xa4, 0x7b, 0x3c, 0xd9, 0x8d,
-	0x6f, 0x3f, 0x6d, 0x40, 0xba, 0xd5, 0x6f, 0x63, 0x71, 0x1d, 0x40, 0xa3, 0xee, 0x38, 0x48, 0xb7,
-	0xfc, 0xdc, 0x0d, 0x78, 0xec, 0xc6, 0x81, 0x2d, 0x96, 0x6e, 0xb9, 0xea, 0xd1, 0x18, 0xf5, 0xff,
-	0x39, 0x7e, 0x9c, 0x1e, 0x88, 0x22, 0x5e, 0x2f, 0xa1, 0x5e, 0xe7, 0x32, 0x60, 0x67, 0x19, 0xbe,
-	0x0f, 0xef, 0x3e, 0x84, 0x66, 0x43, 0x8a, 0x5b, 0x32, 0x1d, 0x2f, 0xa6, 0xbe, 0x09, 0xa4, 0x20,
-	0xcb, 0x30, 0x0c, 0xc2, 0x77, 0xa6, 0x26, 0xc5, 0x7c, 0x71, 0x37, 0x9b, 0x4d, 0x7d, 0xb3, 0x89,
-	0x20, 0xd4, 0x67, 0xe3, 0xe5, 0x7c, 0xea, 0x9b, 0x2d, 0xb9, 0x90, 0xb3, 0xa4, 0xda, 0x13, 0x7c,
-	0x7c, 0xb0, 0x1a, 0x3f, 0x1e, 0xac, 0xc6, 0xd7, 0xd2, 0x02, 0xc7, 0xd2, 0x02, 0xdf, 0x4b, 0x0b,
-	0xfc, 0x2a, 0x2d, 0xb0, 0xd6, 0x55, 0x88, 0x9b, 0xdf, 0x01, 0x00, 0x00, 0xff, 0xff, 0xa9, 0x54,
-	0x02, 0x74, 0xcc, 0x02, 0x00, 0x00,
+	// 461 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x6c, 0x90, 0x4f, 0x6b, 0xdb, 0x30,
+	0x18, 0xc6, 0x2b, 0x27, 0x71, 0x12, 0x79, 0x7f, 0x8c, 0x16, 0x8a, 0x96, 0x81, 0x63, 0x7a, 0x32,
+	0x3b, 0xd8, 0x2c, 0x3d, 0x0c, 0x76, 0x4b, 0xeb, 0x30, 0xcc, 0xc0, 0x0d, 0x4a, 0xc2, 0x8e, 0xc1,
+	0x89, 0x14, 0x4f, 0xac, 0xb1, 0x8c, 0xad, 0x8c, 0xe5, 0xb6, 0x8f, 0xd7, 0xe3, 0x8e, 0x3d, 0x95,
+	0xd5, 0x9f, 0x64, 0x48, 0x76, 0xd2, 0xb1, 0xed, 0x62, 0xde, 0xe7, 0x79, 0x7f, 0xe8, 0x7d, 0xfc,
+	0xc0, 0x0f, 0x29, 0x97, 0x5f, 0xf6, 0x6b, 0x7f, 0x23, 0x76, 0xc1, 0x46, 0x64, 0x32, 0xe1, 0x19,
+	0x2b, 0xe8, 0x9f, 0x63, 0x92, 0xf3, 0x40, 0x1e, 0x72, 0x56, 0x06, 0x32, 0x29, 0xbf, 0xea, 0x8f,
+	0x9f, 0x17, 0x42, 0x0a, 0xf4, 0xea, 0x89, 0xf2, 0xbf, 0xbd, 0xf3, 0x35, 0x34, 0x1c, 0xa4, 0x22,
+	0x15, 0x7a, 0x1f, 0xa8, 0xa9, 0x46, 0x87, 0xa3, 0x54, 0x88, 0xf4, 0x96, 0x05, 0x5a, 0xad, 0xf7,
+	0xdb, 0x40, 0xf2, 0x1d, 0x2b, 0x65, 0xb2, 0xcb, 0x1b, 0xe0, 0xf5, 0xdf, 0x40, 0x92, 0x1d, 0xea,
+	0xd5, 0xc5, 0xbd, 0x01, 0xbb, 0xb3, 0x42, 0x6c, 0x58, 0x59, 0xa2, 0x31, 0x7c, 0x76, 0x3a, 0xba,
+	0xe2, 0x14, 0x03, 0x17, 0x78, 0xfd, 0xab, 0x97, 0xd5, 0xc3, 0xc8, 0xba, 0x3e, 0xfa, 0x51, 0x48,
+	0xac, 0x13, 0x14, 0x51, 0x74, 0x0e, 0x0d, 0x4e, 0xb1, 0xa1, 0x49, 0xb3, 0x7a, 0x18, 0x19, 0x51,
+	0x48, 0x0c, 0x4e, 0x91, 0x0d, 0x5b, 0x39, 0xa7, 0xb8, 0xe5, 0x02, 0xef, 0x39, 0x51, 0x23, 0xba,
+	0x84, 0x66, 0x29, 0x13, 0xb9, 0x2f, 0x71, 0xdb, 0x05, 0xde, 0x8b, 0xf1, 0x1b, 0xff, 0x3f, 0x7f,
+	0xe8, 0xcf, 0x35, 0x42, 0x1a, 0x14, 0x0d, 0x60, 0xa7, 0x94, 0x94, 0x67, 0xb8, 0xa3, 0x2e, 0x90,
+	0x5a, 0xa0, 0x73, 0xf5, 0x14, 0x15, 0x7b, 0x89, 0x4d, 0x6d, 0x37, 0xaa, 0xf1, 0x59, 0x51, 0xe0,
+	0xee, 0xc9, 0x67, 0x45, 0x81, 0x86, 0xb0, 0x27, 0x59, 0xb1, 0xe3, 0x59, 0x72, 0x8b, 0x7b, 0x2e,
+	0xf0, 0x7a, 0xe4, 0xa4, 0xd1, 0x08, 0x5a, 0xec, 0x3b, 0x97, 0xab, 0x26, 0x5b, 0x5f, 0x07, 0x86,
+	0xca, 0xaa, 0xa3, 0xa0, 0xf7, 0xb0, 0xaf, 0x14, 0xa3, 0xab, 0x44, 0x62, 0xe8, 0x02, 0xcf, 0x1a,
+	0x0f, 0xfd, 0xba, 0x50, 0xff, 0x58, 0xa8, 0xbf, 0x38, 0x36, 0x4e, 0x7a, 0x35, 0x3c, 0x91, 0x17,
+	0x11, 0xb4, 0x9a, 0x66, 0xa3, 0x6c, 0x2b, 0x8e, 0x8d, 0x80, 0xa7, 0x46, 0x3c, 0xd8, 0xe6, 0xd9,
+	0x56, 0xe8, 0xf6, 0xac, 0xf1, 0xe0, 0x9f, 0x47, 0x27, 0xd9, 0x81, 0x68, 0xe2, 0xed, 0x12, 0x9a,
+	0x4d, 0x1a, 0x0b, 0x76, 0x97, 0xf1, 0xa7, 0xf8, 0xe6, 0x73, 0x6c, 0x9f, 0x29, 0x71, 0x4d, 0xa6,
+	0x93, 0xc5, 0x34, 0xb4, 0x81, 0x12, 0x64, 0x19, 0xc7, 0x51, 0xfc, 0xd1, 0x36, 0x94, 0x98, 0x2f,
+	0x6e, 0x66, 0xb3, 0x69, 0x68, 0xb7, 0x10, 0x84, 0xe6, 0x6c, 0xb2, 0x9c, 0x4f, 0x43, 0xbb, 0xad,
+	0x16, 0x6a, 0x56, 0x54, 0xe7, 0x0a, 0xdf, 0x3d, 0x3a, 0x67, 0xf7, 0x8f, 0xce, 0xd9, 0x8f, 0xca,
+	0x01, 0x77, 0x95, 0x03, 0x7e, 0x56, 0x0e, 0xf8, 0x55, 0x39, 0x60, 0x6d, 0xea, 0x10, 0x97, 0xbf,
+	0x03, 0x00, 0x00, 0xff, 0xff, 0x60, 0xe5, 0xd9, 0x31, 0xc2, 0x02, 0x00, 0x00,
 }
 
 func (m *Process) Marshal() (dAtA []byte, err error) {
@@ -226,14 +222,18 @@ func (m *Process) MarshalToSizedBuffer(dAtA []byte) (int, error) {
 		i -= len(m.XXX_unrecognized)
 		copy(dAtA[i:], m.XXX_unrecognized)
 	}
-	n1, err1 := github_com_gogo_protobuf_types.StdTimeMarshalTo(m.ExitedAt, dAtA[i-github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt):])
-	if err1 != nil {
-		return 0, err1
+	if m.ExitedAt != nil {
+		{
+			size, err := m.ExitedAt.MarshalToSizedBuffer(dAtA[:i])
+			if err != nil {
+				return 0, err
+			}
+			i -= size
+			i = encodeVarintTask(dAtA, i, uint64(size))
+		}
+		i--
+		dAtA[i] = 0x52
 	}
-	i -= n1
-	i = encodeVarintTask(dAtA, i, uint64(n1))
-	i--
-	dAtA[i] = 0x52
 	if m.ExitStatus != 0 {
 		i = encodeVarintTask(dAtA, i, uint64(m.ExitStatus))
 		i--
@@ -390,8 +390,10 @@ func (m *Process) Size() (n int) {
 	if m.ExitStatus != 0 {
 		n += 1 + sovTask(uint64(m.ExitStatus))
 	}
-	l = github_com_gogo_protobuf_types.SizeOfStdTime(m.ExitedAt)
-	n += 1 + l + sovTask(uint64(l))
+	if m.ExitedAt != nil {
+		l = m.ExitedAt.Size()
+		n += 1 + l + sovTask(uint64(l))
+	}
 	if m.XXX_unrecognized != nil {
 		n += len(m.XXX_unrecognized)
 	}
@@ -437,7 +439,7 @@ func (this *Process) String() string {
 		`Stderr:` + fmt.Sprintf("%v", this.Stderr) + `,`,
 		`Terminal:` + fmt.Sprintf("%v", this.Terminal) + `,`,
 		`ExitStatus:` + fmt.Sprintf("%v", this.ExitStatus) + `,`,
-		`ExitedAt:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types.Timestamp", 1), `&`, ``, 1) + `,`,
+		`ExitedAt:` + strings.Replace(fmt.Sprintf("%v", this.ExitedAt), "Timestamp", "types.Timestamp", 1) + `,`,
 		`XXX_unrecognized:` + fmt.Sprintf("%v", this.XXX_unrecognized) + `,`,
 		`}`,
 	}, "")
@@ -758,7 +760,10 @@ func (m *Process) Unmarshal(dAtA []byte) error {
 			if postIndex > l {
 				return io.ErrUnexpectedEOF
 			}
-			if err := github_com_gogo_protobuf_types.StdTimeUnmarshal(&m.ExitedAt, dAtA[iNdEx:postIndex]); err != nil {
+			if m.ExitedAt == nil {
+				m.ExitedAt = &types.Timestamp{}
+			}
+			if err := m.ExitedAt.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
 				return err
 			}
 			iNdEx = postIndex
diff --git a/api/types/task/task.proto b/api/types/task/task.proto
index 6d5f7f9a9..38df6b305 100644
--- a/api/types/task/task.proto
+++ b/api/types/task/task.proto
@@ -41,7 +41,7 @@ message Process {
 	string stderr = 7;
 	bool terminal = 8;
 	uint32 exit_status = 9;
-	google.protobuf.Timestamp exited_at = 10 [(gogoproto.stdtime) = true, (gogoproto.nullable) = false];
+	google.protobuf.Timestamp exited_at = 10;
 }
 
 message ProcessInfo {
diff --git a/protobuf/timestamp.go b/protobuf/timestamp.go
new file mode 100644
index 000000000..4edef09dc
--- /dev/null
+++ b/protobuf/timestamp.go
@@ -0,0 +1,48 @@
+/*
+   Copyright The containerd Authors.
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+*/
+
+package protobuf
+
+import (
+	"time"
+
+	"github.com/gogo/protobuf/types"
+)
+
+// Once we migrate off from gogo/protobuf, we can use the function below, which don't return any errors.
+// https://github.com/protocolbuffers/protobuf-go/blob/v1.28.0/types/known/timestamppb/timestamp.pb.go#L200-L208
+
+// ToTimestamp creates protobuf's Timestamp from time.Time.
+func ToTimestamp(from time.Time) *types.Timestamp {
+	pt, err := types.TimestampProto(from)
+	if err != nil {
+		panic(err)
+	}
+	return pt
+}
+
+// FromTimestamp creates time.Time from protobuf's Timestamp.
+func FromTimestamp(from *types.Timestamp) time.Time {
+	if from == nil {
+		// Return time.Time's zero value as like timestamppb.
+		return time.Time{}.UTC()
+	}
+	tt, err := types.TimestampFromProto(from)
+	if err != nil {
+		panic(err)
+	}
+	return tt
+}