diff --git a/api/proto/kratos/api/annotations.pb.go b/api/proto/kratos/api/annotations.pb.go
index bc45c0271..866d84310 100644
--- a/api/proto/kratos/api/annotations.pb.go
+++ b/api/proto/kratos/api/annotations.pb.go
@@ -1,13 +1,12 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.25.0
-// 	protoc        v3.14.0
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.15.8
 // source: kratos/api/annotations.proto
 
 package api
 
 import (
-	proto "github.com/golang/protobuf/proto"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	descriptorpb "google.golang.org/protobuf/types/descriptorpb"
@@ -21,10 +20,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
 var file_kratos_api_annotations_proto_extTypes = []protoimpl.ExtensionInfo{
 	{
 		ExtendedType:  (*descriptorpb.EnumOptions)(nil),
@@ -53,13 +48,13 @@ var file_kratos_api_annotations_proto_rawDesc = []byte{
 	0x65, 0x72, 0x72, 0x6f, 0x72, 0x73, 0x12, 0x1c, 0x2e, 0x67, 0x6f, 0x6f, 0x67, 0x6c, 0x65, 0x2e,
 	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x62, 0x75, 0x66, 0x2e, 0x45, 0x6e, 0x75, 0x6d, 0x4f, 0x70, 0x74,
 	0x69, 0x6f, 0x6e, 0x73, 0x18, 0xd4, 0x08, 0x20, 0x01, 0x28, 0x08, 0x52, 0x06, 0x65, 0x72, 0x72,
-	0x6f, 0x72, 0x73, 0x42, 0x58, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x67, 0x69, 0x74, 0x68, 0x75,
-	0x62, 0x2e, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2e, 0x61, 0x70, 0x69, 0x50, 0x01, 0x5a, 0x31,
+	0x6f, 0x72, 0x73, 0x42, 0x5e, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x62, 0x2e, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2e, 0x61, 0x70, 0x69, 0x50, 0x01, 0x5a, 0x37,
 	0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72,
 	0x61, 0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x76, 0x32, 0x2f, 0x61,
-	0x70, 0x69, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x61, 0x70, 0x69, 0x3b, 0x61, 0x70,
-	0x69, 0xa2, 0x02, 0x09, 0x4b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x41, 0x50, 0x49, 0x62, 0x06, 0x70,
-	0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x70, 0x69, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f,
+	0x61, 0x70, 0x69, 0x3b, 0x61, 0x70, 0x69, 0xa2, 0x02, 0x09, 0x4b, 0x72, 0x61, 0x74, 0x6f, 0x73,
+	0x41, 0x50, 0x49, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var file_kratos_api_annotations_proto_goTypes = []interface{}{
diff --git a/api/proto/kratos/api/annotations.proto b/api/proto/kratos/api/annotations.proto
index 576a49ff6..21c63650e 100644
--- a/api/proto/kratos/api/annotations.proto
+++ b/api/proto/kratos/api/annotations.proto
@@ -1,7 +1,7 @@
 syntax = "proto3";
 package kratos.api;
 
-option go_package = "github.com/go-kratos/kratos/v2/api/kratos/api;api";
+option go_package = "github.com/go-kratos/kratos/v2/api/proto/kratos/api;api";
 option java_multiple_files = true;
 option java_package = "com.github.kratos.api";
 option objc_class_prefix = "KratosAPI";
diff --git a/api/proto/kratos/api/metadata.pb.go b/api/proto/kratos/api/metadata.pb.go
index a3551f8aa..8e0fa1316 100644
--- a/api/proto/kratos/api/metadata.pb.go
+++ b/api/proto/kratos/api/metadata.pb.go
@@ -200,13 +200,13 @@ var file_kratos_api_metadata_proto_rawDesc = []byte{
 	0x65, 0x74, 0x53, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x4d, 0x65, 0x74, 0x61, 0x52, 0x65, 0x70,
 	0x6c, 0x79, 0x22, 0x20, 0x82, 0xd3, 0xe4, 0x93, 0x02, 0x1a, 0x12, 0x18, 0x2f, 0x73, 0x65, 0x72,
 	0x76, 0x69, 0x63, 0x65, 0x2f, 0x7b, 0x6e, 0x61, 0x6d, 0x65, 0x7d, 0x2f, 0x6d, 0x65, 0x74, 0x61,
-	0x64, 0x61, 0x74, 0x61, 0x42, 0x58, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x67, 0x69, 0x74, 0x68,
+	0x64, 0x61, 0x74, 0x61, 0x42, 0x5e, 0x0a, 0x15, 0x63, 0x6f, 0x6d, 0x2e, 0x67, 0x69, 0x74, 0x68,
 	0x75, 0x62, 0x2e, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2e, 0x61, 0x70, 0x69, 0x50, 0x01, 0x5a,
-	0x31, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b,
+	0x37, 0x67, 0x69, 0x74, 0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b,
 	0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x76, 0x32, 0x2f,
-	0x61, 0x70, 0x69, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x61, 0x70, 0x69, 0x3b, 0x61,
-	0x70, 0x69, 0xa2, 0x02, 0x09, 0x4b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x41, 0x50, 0x49, 0x62, 0x06,
-	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+	0x61, 0x70, 0x69, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73,
+	0x2f, 0x61, 0x70, 0x69, 0x3b, 0x61, 0x70, 0x69, 0xa2, 0x02, 0x09, 0x4b, 0x72, 0x61, 0x74, 0x6f,
+	0x73, 0x41, 0x50, 0x49, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
 var (
diff --git a/api/proto/kratos/api/metadata.proto b/api/proto/kratos/api/metadata.proto
index 4ed46b1d3..ac34198df 100644
--- a/api/proto/kratos/api/metadata.proto
+++ b/api/proto/kratos/api/metadata.proto
@@ -6,7 +6,7 @@ import "google/protobuf/any.proto";
 import "google/protobuf/descriptor.proto";
 import "google/api/annotations.proto";
 
-option go_package = "github.com/go-kratos/kratos/v2/api/kratos/api;api";
+option go_package = "github.com/go-kratos/kratos/v2/api/proto/kratos/api;api";
 option java_multiple_files = true;
 option java_package = "com.github.kratos.api";
 option objc_class_prefix = "KratosAPI";
diff --git a/examples/blog/api/blog/v1/errors/article.pb.go b/examples/blog/api/blog/v1/errors/article.pb.go
index 7b25fe76b..ad5e72392 100644
--- a/examples/blog/api/blog/v1/errors/article.pb.go
+++ b/examples/blog/api/blog/v1/errors/article.pb.go
@@ -1,14 +1,13 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.25.0-devel
-// 	protoc        v3.6.1
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.15.8
 // source: article.proto
 
 package errors
 
 import (
-	_ "github.com/go-kratos/kratos/v2/api/kratos/api"
-	proto "github.com/golang/protobuf/proto"
+	_ "github.com/go-kratos/kratos/v2/api/proto/kratos/api"
 	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
 	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
 	reflect "reflect"
@@ -22,10 +21,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
 type Article int32
 
 const (
@@ -82,7 +77,7 @@ var file_article_proto_rawDesc = []byte{
 	0x6f, 0x2a, 0x34, 0x0a, 0x07, 0x41, 0x72, 0x74, 0x69, 0x63, 0x6c, 0x65, 0x12, 0x10, 0x0a, 0x0c,
 	0x54, 0x69, 0x74, 0x6c, 0x65, 0x4d, 0x69, 0x73, 0x73, 0x69, 0x6e, 0x67, 0x10, 0x00, 0x12, 0x12,
 	0x0a, 0x0e, 0x43, 0x6f, 0x6e, 0x74, 0x65, 0x6e, 0x74, 0x4d, 0x69, 0x73, 0x73, 0x69, 0x6e, 0x67,
-	0x10, 0x01, 0x1a, 0x03, 0xc0, 0x3e, 0x01, 0x42, 0x62, 0x0a, 0x0e, 0x62, 0x6c, 0x6f, 0x67, 0x2e,
+	0x10, 0x01, 0x1a, 0x03, 0xa0, 0x45, 0x01, 0x42, 0x62, 0x0a, 0x0e, 0x62, 0x6c, 0x6f, 0x67, 0x2e,
 	0x76, 0x31, 0x2e, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x73, 0x50, 0x01, 0x5a, 0x3e, 0x67, 0x69, 0x74,
 	0x68, 0x75, 0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x67, 0x6f, 0x2d, 0x6b, 0x72, 0x61, 0x74, 0x6f,
 	0x73, 0x2f, 0x6b, 0x72, 0x61, 0x74, 0x6f, 0x73, 0x2f, 0x65, 0x78, 0x61, 0x6d, 0x70, 0x6c, 0x65,