diff --git a/go.mod b/go.mod
index 410aed0d1..18f69fcd0 100644
--- a/go.mod
+++ b/go.mod
@@ -13,7 +13,7 @@ require (
 	github.com/vmihailenco/msgpack/v4 v4.3.12
 	google.golang.org/grpc v1.53.0
 	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.3.0
-	google.golang.org/protobuf v1.28.1
+	google.golang.org/protobuf v1.29.0
 )
 
 require (
diff --git a/go.sum b/go.sum
index cce13beb8..dbd2c3d52 100644
--- a/go.sum
+++ b/go.sum
@@ -103,8 +103,8 @@ google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.3.0 h1:rNBFJjBCOgVr9pWD7rs/knKL
 google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.3.0/go.mod h1:Dk1tviKTvMCz5tvh7t+fh94dhmQVHuCt2OzJB3CTW9Y=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.28.1 h1:d0NfwRgPtno5B1Wa6L2DAG+KivqkdutMf1UhdNx175w=
-google.golang.org/protobuf v1.28.1/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
+google.golang.org/protobuf v1.29.0 h1:44S3JjaKmLEE4YIkjzexaP+NzZsudE3Zin5Njn/pYX0=
+google.golang.org/protobuf v1.29.0/go.mod h1:HV8QOd/L58Z+nl8r43ehVNZIU/HEI6OcFqwMG9pJV4I=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY=
 gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
diff --git a/tfprotov5/internal/tfplugin5/tfplugin5.pb.go b/tfprotov5/internal/tfplugin5/tfplugin5.pb.go
index d5899ab56..93c798d07 100644
--- a/tfprotov5/internal/tfplugin5/tfplugin5.pb.go
+++ b/tfprotov5/internal/tfplugin5/tfplugin5.pb.go
@@ -19,7 +19,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
+// 	protoc-gen-go v1.29.0
 // 	protoc        v3.19.4
 // source: tfplugin5.proto
 
diff --git a/tfprotov6/internal/tfplugin6/tfplugin6.pb.go b/tfprotov6/internal/tfplugin6/tfplugin6.pb.go
index 589357a19..38ff8f334 100644
--- a/tfprotov6/internal/tfplugin6/tfplugin6.pb.go
+++ b/tfprotov6/internal/tfplugin6/tfplugin6.pb.go
@@ -19,7 +19,7 @@
 
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.28.1
+// 	protoc-gen-go v1.29.0
 // 	protoc        v3.19.4
 // source: tfplugin6.proto
 
@@ -1475,9 +1475,9 @@ type Schema_Object struct {
 	// MinItems and MaxItems were never used in the protocol, and have no
 	// effect on validation.
 	//
-	// Deprecated: Do not use.
+	// Deprecated: Marked as deprecated in tfplugin6.proto.
 	MinItems int64 `protobuf:"varint,4,opt,name=min_items,json=minItems,proto3" json:"min_items,omitempty"`
-	// Deprecated: Do not use.
+	// Deprecated: Marked as deprecated in tfplugin6.proto.
 	MaxItems int64 `protobuf:"varint,5,opt,name=max_items,json=maxItems,proto3" json:"max_items,omitempty"`
 }
 
@@ -1527,7 +1527,7 @@ func (x *Schema_Object) GetNesting() Schema_Object_NestingMode {
 	return Schema_Object_INVALID
 }
 
-// Deprecated: Do not use.
+// Deprecated: Marked as deprecated in tfplugin6.proto.
 func (x *Schema_Object) GetMinItems() int64 {
 	if x != nil {
 		return x.MinItems
@@ -1535,7 +1535,7 @@ func (x *Schema_Object) GetMinItems() int64 {
 	return 0
 }
 
-// Deprecated: Do not use.
+// Deprecated: Marked as deprecated in tfplugin6.proto.
 func (x *Schema_Object) GetMaxItems() int64 {
 	if x != nil {
 		return x.MaxItems