diff --git a/admissionregistration/v1alpha1/generated.pb.go b/admissionregistration/v1alpha1/generated.pb.go
index 9002b8e9a4..9fa3761f81 100644
--- a/admissionregistration/v1alpha1/generated.pb.go
+++ b/admissionregistration/v1alpha1/generated.pb.go
@@ -28,6 +28,8 @@ limitations under the License.
 		Initializer
 		InitializerConfiguration
 		InitializerConfigurationList
+		MutatingWebhookConfiguration
+		MutatingWebhookConfigurationList
 		Rule
 		RuleWithOperations
 		ServiceReference
@@ -74,42 +76,56 @@ func (*InitializerConfigurationList) Descriptor() ([]byte, []int) {
 	return fileDescriptorGenerated, []int{2}
 }
 
+func (m *MutatingWebhookConfiguration) Reset()      { *m = MutatingWebhookConfiguration{} }
+func (*MutatingWebhookConfiguration) ProtoMessage() {}
+func (*MutatingWebhookConfiguration) Descriptor() ([]byte, []int) {
+	return fileDescriptorGenerated, []int{3}
+}
+
+func (m *MutatingWebhookConfigurationList) Reset()      { *m = MutatingWebhookConfigurationList{} }
+func (*MutatingWebhookConfigurationList) ProtoMessage() {}
+func (*MutatingWebhookConfigurationList) Descriptor() ([]byte, []int) {
+	return fileDescriptorGenerated, []int{4}
+}
+
 func (m *Rule) Reset()                    { *m = Rule{} }
 func (*Rule) ProtoMessage()               {}
-func (*Rule) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{3} }
+func (*Rule) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{5} }
 
 func (m *RuleWithOperations) Reset()                    { *m = RuleWithOperations{} }
 func (*RuleWithOperations) ProtoMessage()               {}
-func (*RuleWithOperations) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{4} }
+func (*RuleWithOperations) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{6} }
 
 func (m *ServiceReference) Reset()                    { *m = ServiceReference{} }
 func (*ServiceReference) ProtoMessage()               {}
-func (*ServiceReference) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{5} }
+func (*ServiceReference) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{7} }
 
 func (m *ValidatingWebhookConfiguration) Reset()      { *m = ValidatingWebhookConfiguration{} }
 func (*ValidatingWebhookConfiguration) ProtoMessage() {}
 func (*ValidatingWebhookConfiguration) Descriptor() ([]byte, []int) {
-	return fileDescriptorGenerated, []int{6}
+	return fileDescriptorGenerated, []int{8}
 }
 
 func (m *ValidatingWebhookConfigurationList) Reset()      { *m = ValidatingWebhookConfigurationList{} }
 func (*ValidatingWebhookConfigurationList) ProtoMessage() {}
 func (*ValidatingWebhookConfigurationList) Descriptor() ([]byte, []int) {
-	return fileDescriptorGenerated, []int{7}
+	return fileDescriptorGenerated, []int{9}
 }
 
 func (m *Webhook) Reset()                    { *m = Webhook{} }
 func (*Webhook) ProtoMessage()               {}
-func (*Webhook) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{8} }
+func (*Webhook) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{10} }
 
 func (m *WebhookClientConfig) Reset()                    { *m = WebhookClientConfig{} }
 func (*WebhookClientConfig) ProtoMessage()               {}
-func (*WebhookClientConfig) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{9} }
+func (*WebhookClientConfig) Descriptor() ([]byte, []int) { return fileDescriptorGenerated, []int{11} }
 
 func init() {
 	proto.RegisterType((*Initializer)(nil), "k8s.io.api.admissionregistration.v1alpha1.Initializer")
 	proto.RegisterType((*InitializerConfiguration)(nil), "k8s.io.api.admissionregistration.v1alpha1.InitializerConfiguration")
 	proto.RegisterType((*InitializerConfigurationList)(nil), "k8s.io.api.admissionregistration.v1alpha1.InitializerConfigurationList")
+	proto.RegisterType((*MutatingWebhookConfiguration)(nil), "k8s.io.api.admissionregistration.v1alpha1.MutatingWebhookConfiguration")
+	proto.RegisterType((*MutatingWebhookConfigurationList)(nil), "k8s.io.api.admissionregistration.v1alpha1.MutatingWebhookConfigurationList")
 	proto.RegisterType((*Rule)(nil), "k8s.io.api.admissionregistration.v1alpha1.Rule")
 	proto.RegisterType((*RuleWithOperations)(nil), "k8s.io.api.admissionregistration.v1alpha1.RuleWithOperations")
 	proto.RegisterType((*ServiceReference)(nil), "k8s.io.api.admissionregistration.v1alpha1.ServiceReference")
@@ -228,6 +244,82 @@ func (m *InitializerConfigurationList) MarshalTo(dAtA []byte) (int, error) {
 	return i, nil
 }
 
+func (m *MutatingWebhookConfiguration) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MutatingWebhookConfiguration) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	dAtA[i] = 0xa
+	i++
+	i = encodeVarintGenerated(dAtA, i, uint64(m.ObjectMeta.Size()))
+	n3, err := m.ObjectMeta.MarshalTo(dAtA[i:])
+	if err != nil {
+		return 0, err
+	}
+	i += n3
+	if len(m.Webhooks) > 0 {
+		for _, msg := range m.Webhooks {
+			dAtA[i] = 0x12
+			i++
+			i = encodeVarintGenerated(dAtA, i, uint64(msg.Size()))
+			n, err := msg.MarshalTo(dAtA[i:])
+			if err != nil {
+				return 0, err
+			}
+			i += n
+		}
+	}
+	return i, nil
+}
+
+func (m *MutatingWebhookConfigurationList) Marshal() (dAtA []byte, err error) {
+	size := m.Size()
+	dAtA = make([]byte, size)
+	n, err := m.MarshalTo(dAtA)
+	if err != nil {
+		return nil, err
+	}
+	return dAtA[:n], nil
+}
+
+func (m *MutatingWebhookConfigurationList) MarshalTo(dAtA []byte) (int, error) {
+	var i int
+	_ = i
+	var l int
+	_ = l
+	dAtA[i] = 0xa
+	i++
+	i = encodeVarintGenerated(dAtA, i, uint64(m.ListMeta.Size()))
+	n4, err := m.ListMeta.MarshalTo(dAtA[i:])
+	if err != nil {
+		return 0, err
+	}
+	i += n4
+	if len(m.Items) > 0 {
+		for _, msg := range m.Items {
+			dAtA[i] = 0x12
+			i++
+			i = encodeVarintGenerated(dAtA, i, uint64(msg.Size()))
+			n, err := msg.MarshalTo(dAtA[i:])
+			if err != nil {
+				return 0, err
+			}
+			i += n
+		}
+	}
+	return i, nil
+}
+
 func (m *Rule) Marshal() (dAtA []byte, err error) {
 	size := m.Size()
 	dAtA = make([]byte, size)
@@ -324,11 +416,11 @@ func (m *RuleWithOperations) MarshalTo(dAtA []byte) (int, error) {
 	dAtA[i] = 0x12
 	i++
 	i = encodeVarintGenerated(dAtA, i, uint64(m.Rule.Size()))
-	n3, err := m.Rule.MarshalTo(dAtA[i:])
+	n5, err := m.Rule.MarshalTo(dAtA[i:])
 	if err != nil {
 		return 0, err
 	}
-	i += n3
+	i += n5
 	return i, nil
 }
 
@@ -376,11 +468,11 @@ func (m *ValidatingWebhookConfiguration) MarshalTo(dAtA []byte) (int, error) {
 	dAtA[i] = 0xa
 	i++
 	i = encodeVarintGenerated(dAtA, i, uint64(m.ObjectMeta.Size()))
-	n4, err := m.ObjectMeta.MarshalTo(dAtA[i:])
+	n6, err := m.ObjectMeta.MarshalTo(dAtA[i:])
 	if err != nil {
 		return 0, err
 	}
-	i += n4
+	i += n6
 	if len(m.Webhooks) > 0 {
 		for _, msg := range m.Webhooks {
 			dAtA[i] = 0x12
@@ -414,11 +506,11 @@ func (m *ValidatingWebhookConfigurationList) MarshalTo(dAtA []byte) (int, error)
 	dAtA[i] = 0xa
 	i++
 	i = encodeVarintGenerated(dAtA, i, uint64(m.ListMeta.Size()))
-	n5, err := m.ListMeta.MarshalTo(dAtA[i:])
+	n7, err := m.ListMeta.MarshalTo(dAtA[i:])
 	if err != nil {
 		return 0, err
 	}
-	i += n5
+	i += n7
 	if len(m.Items) > 0 {
 		for _, msg := range m.Items {
 			dAtA[i] = 0x12
@@ -456,11 +548,11 @@ func (m *Webhook) MarshalTo(dAtA []byte) (int, error) {
 	dAtA[i] = 0x12
 	i++
 	i = encodeVarintGenerated(dAtA, i, uint64(m.ClientConfig.Size()))
-	n6, err := m.ClientConfig.MarshalTo(dAtA[i:])
+	n8, err := m.ClientConfig.MarshalTo(dAtA[i:])
 	if err != nil {
 		return 0, err
 	}
-	i += n6
+	i += n8
 	if len(m.Rules) > 0 {
 		for _, msg := range m.Rules {
 			dAtA[i] = 0x1a
@@ -500,11 +592,11 @@ func (m *WebhookClientConfig) MarshalTo(dAtA []byte) (int, error) {
 	dAtA[i] = 0xa
 	i++
 	i = encodeVarintGenerated(dAtA, i, uint64(m.Service.Size()))
-	n7, err := m.Service.MarshalTo(dAtA[i:])
+	n9, err := m.Service.MarshalTo(dAtA[i:])
 	if err != nil {
 		return 0, err
 	}
-	i += n7
+	i += n9
 	if m.CABundle != nil {
 		dAtA[i] = 0x12
 		i++
@@ -587,6 +679,34 @@ func (m *InitializerConfigurationList) Size() (n int) {
 	return n
 }
 
+func (m *MutatingWebhookConfiguration) Size() (n int) {
+	var l int
+	_ = l
+	l = m.ObjectMeta.Size()
+	n += 1 + l + sovGenerated(uint64(l))
+	if len(m.Webhooks) > 0 {
+		for _, e := range m.Webhooks {
+			l = e.Size()
+			n += 1 + l + sovGenerated(uint64(l))
+		}
+	}
+	return n
+}
+
+func (m *MutatingWebhookConfigurationList) Size() (n int) {
+	var l int
+	_ = l
+	l = m.ListMeta.Size()
+	n += 1 + l + sovGenerated(uint64(l))
+	if len(m.Items) > 0 {
+		for _, e := range m.Items {
+			l = e.Size()
+			n += 1 + l + sovGenerated(uint64(l))
+		}
+	}
+	return n
+}
+
 func (m *Rule) Size() (n int) {
 	var l int
 	_ = l
@@ -743,6 +863,28 @@ func (this *InitializerConfigurationList) String() string {
 	}, "")
 	return s
 }
+func (this *MutatingWebhookConfiguration) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&MutatingWebhookConfiguration{`,
+		`ObjectMeta:` + strings.Replace(strings.Replace(this.ObjectMeta.String(), "ObjectMeta", "k8s_io_apimachinery_pkg_apis_meta_v1.ObjectMeta", 1), `&`, ``, 1) + `,`,
+		`Webhooks:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Webhooks), "Webhook", "Webhook", 1), `&`, ``, 1) + `,`,
+		`}`,
+	}, "")
+	return s
+}
+func (this *MutatingWebhookConfigurationList) String() string {
+	if this == nil {
+		return "nil"
+	}
+	s := strings.Join([]string{`&MutatingWebhookConfigurationList{`,
+		`ListMeta:` + strings.Replace(strings.Replace(this.ListMeta.String(), "ListMeta", "k8s_io_apimachinery_pkg_apis_meta_v1.ListMeta", 1), `&`, ``, 1) + `,`,
+		`Items:` + strings.Replace(strings.Replace(fmt.Sprintf("%v", this.Items), "MutatingWebhookConfiguration", "MutatingWebhookConfiguration", 1), `&`, ``, 1) + `,`,
+		`}`,
+	}, "")
+	return s
+}
 func (this *Rule) String() string {
 	if this == nil {
 		return "nil"
@@ -1164,6 +1306,228 @@ func (m *InitializerConfigurationList) Unmarshal(dAtA []byte) error {
 	}
 	return nil
 }
+func (m *MutatingWebhookConfiguration) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenerated
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MutatingWebhookConfiguration: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MutatingWebhookConfiguration: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ObjectMeta", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.ObjectMeta.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Webhooks", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Webhooks = append(m.Webhooks, Webhook{})
+			if err := m.Webhooks[len(m.Webhooks)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenerated(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
+func (m *MutatingWebhookConfigurationList) Unmarshal(dAtA []byte) error {
+	l := len(dAtA)
+	iNdEx := 0
+	for iNdEx < l {
+		preIndex := iNdEx
+		var wire uint64
+		for shift := uint(0); ; shift += 7 {
+			if shift >= 64 {
+				return ErrIntOverflowGenerated
+			}
+			if iNdEx >= l {
+				return io.ErrUnexpectedEOF
+			}
+			b := dAtA[iNdEx]
+			iNdEx++
+			wire |= (uint64(b) & 0x7F) << shift
+			if b < 0x80 {
+				break
+			}
+		}
+		fieldNum := int32(wire >> 3)
+		wireType := int(wire & 0x7)
+		if wireType == 4 {
+			return fmt.Errorf("proto: MutatingWebhookConfigurationList: wiretype end group for non-group")
+		}
+		if fieldNum <= 0 {
+			return fmt.Errorf("proto: MutatingWebhookConfigurationList: illegal tag %d (wire type %d)", fieldNum, wire)
+		}
+		switch fieldNum {
+		case 1:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field ListMeta", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			if err := m.ListMeta.Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		case 2:
+			if wireType != 2 {
+				return fmt.Errorf("proto: wrong wireType = %d for field Items", wireType)
+			}
+			var msglen int
+			for shift := uint(0); ; shift += 7 {
+				if shift >= 64 {
+					return ErrIntOverflowGenerated
+				}
+				if iNdEx >= l {
+					return io.ErrUnexpectedEOF
+				}
+				b := dAtA[iNdEx]
+				iNdEx++
+				msglen |= (int(b) & 0x7F) << shift
+				if b < 0x80 {
+					break
+				}
+			}
+			if msglen < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			postIndex := iNdEx + msglen
+			if postIndex > l {
+				return io.ErrUnexpectedEOF
+			}
+			m.Items = append(m.Items, MutatingWebhookConfiguration{})
+			if err := m.Items[len(m.Items)-1].Unmarshal(dAtA[iNdEx:postIndex]); err != nil {
+				return err
+			}
+			iNdEx = postIndex
+		default:
+			iNdEx = preIndex
+			skippy, err := skipGenerated(dAtA[iNdEx:])
+			if err != nil {
+				return err
+			}
+			if skippy < 0 {
+				return ErrInvalidLengthGenerated
+			}
+			if (iNdEx + skippy) > l {
+				return io.ErrUnexpectedEOF
+			}
+			iNdEx += skippy
+		}
+	}
+
+	if iNdEx > l {
+		return io.ErrUnexpectedEOF
+	}
+	return nil
+}
 func (m *Rule) Unmarshal(dAtA []byte) error {
 	l := len(dAtA)
 	iNdEx := 0
@@ -2160,60 +2524,62 @@ func init() {
 }
 
 var fileDescriptorGenerated = []byte{
-	// 878 bytes of a gzipped FileDescriptorProto
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-	0xcf, 0x62, 0x81, 0x14, 0x92, 0xbf, 0x0c, 0x32, 0x7e, 0xd2, 0x50, 0x77, 0x14, 0x30, 0xc9, 0xa8,
-	0xc7, 0x7e, 0x00, 0x8e, 0xf7, 0x50, 0x2b, 0xa0, 0x3e, 0x0c, 0xb4, 0x3d, 0x6d, 0xbf, 0x63, 0xf7,
-	0x2e, 0x96, 0xc3, 0x46, 0xb2, 0x1c, 0xb6, 0x1e, 0x53, 0x1f, 0x48, 0xda, 0xc1, 0x67, 0x68, 0x9b,
-	0xc7, 0x1e, 0x88, 0xc1, 0xd6, 0x5e, 0x73, 0xbf, 0x7b, 0x68, 0x99, 0xb7, 0x3e, 0x6f, 0x93, 0xc4,
-	0x1e, 0xd8, 0xfd, 0x9c, 0x73, 0x5b, 0xad, 0x04, 0xc9, 0xc8, 0x8c, 0xbf, 0x35, 0x34, 0xa8, 0xe9,
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-	0xdf, 0x00, 0x00, 0x00, 0xff, 0xff, 0x62, 0x7f, 0x7f, 0x23, 0xbb, 0x09, 0x00, 0x00,
+	// 912 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xdc, 0x56, 0xbf, 0x6f, 0x23, 0x45,
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 }
diff --git a/admissionregistration/v1alpha1/generated.proto b/admissionregistration/v1alpha1/generated.proto
index 9b1ede6fdd..8b006b1619 100644
--- a/admissionregistration/v1alpha1/generated.proto
+++ b/admissionregistration/v1alpha1/generated.proto
@@ -75,6 +75,30 @@ message InitializerConfigurationList {
   repeated InitializerConfiguration items = 2;
 }
 
+// MutatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and may change the object.
+message MutatingWebhookConfiguration {
+  // Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.
+  // +optional
+  optional k8s.io.apimachinery.pkg.apis.meta.v1.ObjectMeta metadata = 1;
+
+  // Webhooks is a list of webhooks and the affected resources and operations.
+  // +optional
+  // +patchMergeKey=name
+  // +patchStrategy=merge
+  repeated Webhook Webhooks = 2;
+}
+
+// MutatingWebhookConfigurationList is a list of MutatingWebhookConfiguration.
+message MutatingWebhookConfigurationList {
+  // Standard list metadata.
+  // More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds
+  // +optional
+  optional k8s.io.apimachinery.pkg.apis.meta.v1.ListMeta metadata = 1;
+
+  // List of MutatingWebhookConfiguration.
+  repeated MutatingWebhookConfiguration items = 2;
+}
+
 // Rule is a tuple of APIGroups, APIVersion, and Resources.It is recommended
 // to make sure that all the tuple expansions are valid.
 message Rule {
diff --git a/admissionregistration/v1alpha1/types_swagger_doc_generated.go b/admissionregistration/v1alpha1/types_swagger_doc_generated.go
index 9f09cf00d5..851c8e5548 100644
--- a/admissionregistration/v1alpha1/types_swagger_doc_generated.go
+++ b/admissionregistration/v1alpha1/types_swagger_doc_generated.go
@@ -57,6 +57,26 @@ func (InitializerConfigurationList) SwaggerDoc() map[string]string {
 	return map_InitializerConfigurationList
 }
 
+var map_MutatingWebhookConfiguration = map[string]string{
+	"":         "MutatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and may change the object.",
+	"metadata": "Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.",
+	"webhooks": "Webhooks is a list of webhooks and the affected resources and operations.",
+}
+
+func (MutatingWebhookConfiguration) SwaggerDoc() map[string]string {
+	return map_MutatingWebhookConfiguration
+}
+
+var map_MutatingWebhookConfigurationList = map[string]string{
+	"":         "MutatingWebhookConfigurationList is a list of MutatingWebhookConfiguration.",
+	"metadata": "Standard list metadata. More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#types-kinds",
+	"items":    "List of MutatingWebhookConfiguration.",
+}
+
+func (MutatingWebhookConfigurationList) SwaggerDoc() map[string]string {
+	return map_MutatingWebhookConfigurationList
+}
+
 var map_Rule = map[string]string{
 	"":            "Rule is a tuple of APIGroups, APIVersion, and Resources.It is recommended to make sure that all the tuple expansions are valid.",
 	"apiGroups":   "APIGroups is the API groups the resources belong to. '*' is all groups. If '*' is present, the length of the slice must be one. Required.",
@@ -90,7 +110,7 @@ func (ServiceReference) SwaggerDoc() map[string]string {
 var map_ValidatingWebhookConfiguration = map[string]string{
 	"":         "ValidatingWebhookConfiguration describes the configuration of and admission webhook that accept or reject and object without changing it.",
 	"metadata": "Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/api-conventions.md#metadata.",
-	"Webhooks": "Webhooks is a list of webhooks and the affected resources and operations.",
+	"webhooks": "Webhooks is a list of webhooks and the affected resources and operations.",
 }
 
 func (ValidatingWebhookConfiguration) SwaggerDoc() map[string]string {
diff --git a/admissionregistration/v1alpha1/zz_generated.deepcopy.go b/admissionregistration/v1alpha1/zz_generated.deepcopy.go
index 30a2db80b9..0f164ae31a 100644
--- a/admissionregistration/v1alpha1/zz_generated.deepcopy.go
+++ b/admissionregistration/v1alpha1/zz_generated.deepcopy.go
@@ -48,6 +48,14 @@ func RegisterDeepCopies(scheme *runtime.Scheme) error {
 			in.(*InitializerConfigurationList).DeepCopyInto(out.(*InitializerConfigurationList))
 			return nil
 		}, InType: reflect.TypeOf(&InitializerConfigurationList{})},
+		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
+			in.(*MutatingWebhookConfiguration).DeepCopyInto(out.(*MutatingWebhookConfiguration))
+			return nil
+		}, InType: reflect.TypeOf(&MutatingWebhookConfiguration{})},
+		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
+			in.(*MutatingWebhookConfigurationList).DeepCopyInto(out.(*MutatingWebhookConfigurationList))
+			return nil
+		}, InType: reflect.TypeOf(&MutatingWebhookConfigurationList{})},
 		conversion.GeneratedDeepCopyFunc{Fn: func(in interface{}, out interface{}, c *conversion.Cloner) error {
 			in.(*Rule).DeepCopyInto(out.(*Rule))
 			return nil
@@ -170,6 +178,74 @@ func (in *InitializerConfigurationList) DeepCopyObject() runtime.Object {
 	}
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *MutatingWebhookConfiguration) DeepCopyInto(out *MutatingWebhookConfiguration) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	if in.Webhooks != nil {
+		in, out := &in.Webhooks, &out.Webhooks
+		*out = make([]Webhook, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MutatingWebhookConfiguration.
+func (in *MutatingWebhookConfiguration) DeepCopy() *MutatingWebhookConfiguration {
+	if in == nil {
+		return nil
+	}
+	out := new(MutatingWebhookConfiguration)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *MutatingWebhookConfiguration) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	} else {
+		return nil
+	}
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *MutatingWebhookConfigurationList) DeepCopyInto(out *MutatingWebhookConfigurationList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	out.ListMeta = in.ListMeta
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]MutatingWebhookConfiguration, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	return
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new MutatingWebhookConfigurationList.
+func (in *MutatingWebhookConfigurationList) DeepCopy() *MutatingWebhookConfigurationList {
+	if in == nil {
+		return nil
+	}
+	out := new(MutatingWebhookConfigurationList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *MutatingWebhookConfigurationList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	} else {
+		return nil
+	}
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *Rule) DeepCopyInto(out *Rule) {
 	*out = *in