diff --git a/go.mod b/go.mod
index 628c2b4..10a5bf1 100644
--- a/go.mod
+++ b/go.mod
@@ -20,7 +20,6 @@
 	github.com/franela/goreq v0.0.0-20171204163338-bcd34c9993f8 // indirect
 	github.com/go-logfmt/logfmt v0.5.0
 	github.com/go-stack/stack v1.8.0
-	github.com/golang/protobuf v1.5.2
 	github.com/google/btree v1.0.0 // indirect
 	github.com/hashicorp/consul/api v1.3.0
 	github.com/hashicorp/golang-lru v0.5.1 // indirect
@@ -49,6 +48,7 @@
 	golang.org/x/time v0.0.0-20200416051211-89c76fbcd5d1
 	golang.org/x/tools v0.1.2
 	google.golang.org/grpc v1.38.0
+	google.golang.org/protobuf v1.26.0
 	gopkg.in/gcfg.v1 v1.2.3 // indirect
 	gopkg.in/warnings.v0 v0.1.2 // indirect
 )
diff --git a/transport/grpc/_grpc_test/pb/generate.go b/transport/grpc/_grpc_test/pb/generate.go
index aa20bb6..0ed7406 100644
--- a/transport/grpc/_grpc_test/pb/generate.go
+++ b/transport/grpc/_grpc_test/pb/generate.go
@@ -1,3 +1,3 @@
 package pb
 
-//go:generate protoc test.proto --go_out=plugins=grpc:.
+//go:generate protoc test.proto --go_out=. --go-grpc_out=. --go_opt=Mtest.proto=github.com/go-kit/kit/transport/grpc/_grpc_test/pb --go_opt=paths=source_relative --go-grpc_opt=paths=source_relative --go-grpc_opt=Mtest.proto=github.com/go-kit/kit/transport/grpc/_grpc_test/pb
diff --git a/transport/grpc/_grpc_test/pb/test.pb.go b/transport/grpc/_grpc_test/pb/test.pb.go
index 8976747..66e94b3 100644
--- a/transport/grpc/_grpc_test/pb/test.pb.go
+++ b/transport/grpc/_grpc_test/pb/test.pb.go
@@ -1,201 +1,216 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.16.0
 // source: test.proto
 
 package pb
 
 import (
-	context "context"
-	fmt "fmt"
-	proto "github.com/golang/protobuf/proto"
-	grpc "google.golang.org/grpc"
-	math "math"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
 
 type TestRequest struct {
-	A                    string   `protobuf:"bytes,1,opt,name=a,proto3" json:"a,omitempty"`
-	B                    int64    `protobuf:"varint,2,opt,name=b,proto3" json:"b,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *TestRequest) Reset()         { *m = TestRequest{} }
-func (m *TestRequest) String() string { return proto.CompactTextString(m) }
-func (*TestRequest) ProtoMessage()    {}
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	A string `protobuf:"bytes,1,opt,name=a,proto3" json:"a,omitempty"`
+	B int64  `protobuf:"varint,2,opt,name=b,proto3" json:"b,omitempty"`
+}
+
+func (x *TestRequest) Reset() {
+	*x = TestRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TestRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TestRequest) ProtoMessage() {}
+
+func (x *TestRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TestRequest.ProtoReflect.Descriptor instead.
 func (*TestRequest) Descriptor() ([]byte, []int) {
-	return fileDescriptor_c161fcfdc0c3ff1e, []int{0}
-}
-
-func (m *TestRequest) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_TestRequest.Unmarshal(m, b)
-}
-func (m *TestRequest) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_TestRequest.Marshal(b, m, deterministic)
-}
-func (m *TestRequest) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_TestRequest.Merge(m, src)
-}
-func (m *TestRequest) XXX_Size() int {
-	return xxx_messageInfo_TestRequest.Size(m)
-}
-func (m *TestRequest) XXX_DiscardUnknown() {
-	xxx_messageInfo_TestRequest.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_TestRequest proto.InternalMessageInfo
-
-func (m *TestRequest) GetA() string {
-	if m != nil {
-		return m.A
+	return file_test_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *TestRequest) GetA() string {
+	if x != nil {
+		return x.A
 	}
 	return ""
 }
 
-func (m *TestRequest) GetB() int64 {
-	if m != nil {
-		return m.B
+func (x *TestRequest) GetB() int64 {
+	if x != nil {
+		return x.B
 	}
 	return 0
 }
 
 type TestResponse struct {
-	V                    string   `protobuf:"bytes,1,opt,name=v,proto3" json:"v,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
-}
-
-func (m *TestResponse) Reset()         { *m = TestResponse{} }
-func (m *TestResponse) String() string { return proto.CompactTextString(m) }
-func (*TestResponse) ProtoMessage()    {}
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	V string `protobuf:"bytes,1,opt,name=v,proto3" json:"v,omitempty"`
+}
+
+func (x *TestResponse) Reset() {
+	*x = TestResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_test_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *TestResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*TestResponse) ProtoMessage() {}
+
+func (x *TestResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_test_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use TestResponse.ProtoReflect.Descriptor instead.
 func (*TestResponse) Descriptor() ([]byte, []int) {
-	return fileDescriptor_c161fcfdc0c3ff1e, []int{1}
-}
-
-func (m *TestResponse) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_TestResponse.Unmarshal(m, b)
-}
-func (m *TestResponse) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_TestResponse.Marshal(b, m, deterministic)
-}
-func (m *TestResponse) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_TestResponse.Merge(m, src)
-}
-func (m *TestResponse) XXX_Size() int {
-	return xxx_messageInfo_TestResponse.Size(m)
-}
-func (m *TestResponse) XXX_DiscardUnknown() {
-	xxx_messageInfo_TestResponse.DiscardUnknown(m)
-}
-
-var xxx_messageInfo_TestResponse proto.InternalMessageInfo
-
-func (m *TestResponse) GetV() string {
-	if m != nil {
-		return m.V
+	return file_test_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *TestResponse) GetV() string {
+	if x != nil {
+		return x.V
 	}
 	return ""
 }
 
-func init() {
-	proto.RegisterType((*TestRequest)(nil), "pb.TestRequest")
-	proto.RegisterType((*TestResponse)(nil), "pb.TestResponse")
-}
-
-func init() { proto.RegisterFile("test.proto", fileDescriptor_c161fcfdc0c3ff1e) }
-
-var fileDescriptor_c161fcfdc0c3ff1e = []byte{
-	// 129 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0xe2, 0x2a, 0x49, 0x2d, 0x2e,
-	0xd1, 0x2b, 0x28, 0xca, 0x2f, 0xc9, 0x17, 0x62, 0x2a, 0x48, 0x52, 0xd2, 0xe4, 0xe2, 0x0e, 0x49,
-	0x2d, 0x2e, 0x09, 0x4a, 0x2d, 0x2c, 0x4d, 0x2d, 0x2e, 0x11, 0xe2, 0xe1, 0x62, 0x4c, 0x94, 0x60,
-	0x54, 0x60, 0xd4, 0xe0, 0x0c, 0x62, 0x4c, 0x04, 0xf1, 0x92, 0x24, 0x98, 0x14, 0x18, 0x35, 0x98,
-	0x83, 0x18, 0x93, 0x94, 0x64, 0xb8, 0x78, 0x20, 0x4a, 0x8b, 0x0b, 0xf2, 0xf3, 0x8a, 0x53, 0x41,
-	0xb2, 0x65, 0x30, 0xb5, 0x65, 0x46, 0xc6, 0x5c, 0x2c, 0x20, 0x59, 0x21, 0x6d, 0x28, 0xcd, 0xaf,
-	0x57, 0x90, 0xa4, 0x87, 0x64, 0xb4, 0x94, 0x00, 0x42, 0x00, 0x62, 0x80, 0x12, 0x43, 0x12, 0x1b,
-	0xd8, 0x21, 0xc6, 0x80, 0x00, 0x00, 0x00, 0xff, 0xff, 0x49, 0xfc, 0xd8, 0xf1, 0x96, 0x00, 0x00,
-	0x00,
-}
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ context.Context
-var _ grpc.ClientConn
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-const _ = grpc.SupportPackageIsVersion4
-
-// TestClient is the client API for Test service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://godoc.org/google.golang.org/grpc#ClientConn.NewStream.
-type TestClient interface {
-	Test(ctx context.Context, in *TestRequest, opts ...grpc.CallOption) (*TestResponse, error)
-}
-
-type testClient struct {
-	cc *grpc.ClientConn
-}
-
-func NewTestClient(cc *grpc.ClientConn) TestClient {
-	return &testClient{cc}
-}
-
-func (c *testClient) Test(ctx context.Context, in *TestRequest, opts ...grpc.CallOption) (*TestResponse, error) {
-	out := new(TestResponse)
-	err := c.cc.Invoke(ctx, "/pb.Test/Test", in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// TestServer is the server API for Test service.
-type TestServer interface {
-	Test(context.Context, *TestRequest) (*TestResponse, error)
-}
-
-func RegisterTestServer(s *grpc.Server, srv TestServer) {
-	s.RegisterService(&_Test_serviceDesc, srv)
-}
-
-func _Test_Test_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(TestRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TestServer).Test(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: "/pb.Test/Test",
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TestServer).Test(ctx, req.(*TestRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-var _Test_serviceDesc = grpc.ServiceDesc{
-	ServiceName: "pb.Test",
-	HandlerType: (*TestServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "Test",
-			Handler:    _Test_Test_Handler,
+var File_test_proto protoreflect.FileDescriptor
+
+var file_test_proto_rawDesc = []byte{
+	0x0a, 0x0a, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x02, 0x70, 0x62,
+	0x22, 0x29, 0x0a, 0x0b, 0x54, 0x65, 0x73, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x12,
+	0x0c, 0x0a, 0x01, 0x61, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x01, 0x61, 0x12, 0x0c, 0x0a,
+	0x01, 0x62, 0x18, 0x02, 0x20, 0x01, 0x28, 0x03, 0x52, 0x01, 0x62, 0x22, 0x1c, 0x0a, 0x0c, 0x54,
+	0x65, 0x73, 0x74, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x0c, 0x0a, 0x01, 0x76,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x01, 0x76, 0x32, 0x33, 0x0a, 0x04, 0x54, 0x65, 0x73,
+	0x74, 0x12, 0x2b, 0x0a, 0x04, 0x54, 0x65, 0x73, 0x74, 0x12, 0x0f, 0x2e, 0x70, 0x62, 0x2e, 0x54,
+	0x65, 0x73, 0x74, 0x52, 0x65, 0x71, 0x75, 0x65, 0x73, 0x74, 0x1a, 0x10, 0x2e, 0x70, 0x62, 0x2e,
+	0x54, 0x65, 0x73, 0x74, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x22, 0x00, 0x62, 0x06,
+	0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+}
+
+var (
+	file_test_proto_rawDescOnce sync.Once
+	file_test_proto_rawDescData = file_test_proto_rawDesc
+)
+
+func file_test_proto_rawDescGZIP() []byte {
+	file_test_proto_rawDescOnce.Do(func() {
+		file_test_proto_rawDescData = protoimpl.X.CompressGZIP(file_test_proto_rawDescData)
+	})
+	return file_test_proto_rawDescData
+}
+
+var file_test_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
+var file_test_proto_goTypes = []interface{}{
+	(*TestRequest)(nil),  // 0: pb.TestRequest
+	(*TestResponse)(nil), // 1: pb.TestResponse
+}
+var file_test_proto_depIdxs = []int32{
+	0, // 0: pb.Test.Test:input_type -> pb.TestRequest
+	1, // 1: pb.Test.Test:output_type -> pb.TestResponse
+	1, // [1:2] is the sub-list for method output_type
+	0, // [0:1] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_test_proto_init() }
+func file_test_proto_init() {
+	if File_test_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_test_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TestRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_test_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*TestResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_test_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   2,
+			NumExtensions: 0,
+			NumServices:   1,
 		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "test.proto",
-}
+		GoTypes:           file_test_proto_goTypes,
+		DependencyIndexes: file_test_proto_depIdxs,
+		MessageInfos:      file_test_proto_msgTypes,
+	}.Build()
+	File_test_proto = out.File
+	file_test_proto_rawDesc = nil
+	file_test_proto_goTypes = nil
+	file_test_proto_depIdxs = nil
+}
diff --git a/transport/grpc/_grpc_test/pb/test_grpc.pb.go b/transport/grpc/_grpc_test/pb/test_grpc.pb.go
new file mode 100644
index 0000000..d442317
--- /dev/null
+++ b/transport/grpc/_grpc_test/pb/test_grpc.pb.go
@@ -0,0 +1,101 @@
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+
+package pb
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.32.0 or later.
+const _ = grpc.SupportPackageIsVersion7
+
+// TestClient is the client API for Test service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type TestClient interface {
+	Test(ctx context.Context, in *TestRequest, opts ...grpc.CallOption) (*TestResponse, error)
+}
+
+type testClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewTestClient(cc grpc.ClientConnInterface) TestClient {
+	return &testClient{cc}
+}
+
+func (c *testClient) Test(ctx context.Context, in *TestRequest, opts ...grpc.CallOption) (*TestResponse, error) {
+	out := new(TestResponse)
+	err := c.cc.Invoke(ctx, "/pb.Test/Test", in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// TestServer is the server API for Test service.
+// All implementations must embed UnimplementedTestServer
+// for forward compatibility
+type TestServer interface {
+	Test(context.Context, *TestRequest) (*TestResponse, error)
+	mustEmbedUnimplementedTestServer()
+}
+
+// UnimplementedTestServer must be embedded to have forward compatible implementations.
+type UnimplementedTestServer struct {
+}
+
+func (UnimplementedTestServer) Test(context.Context, *TestRequest) (*TestResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Test not implemented")
+}
+func (UnimplementedTestServer) mustEmbedUnimplementedTestServer() {}
+
+// UnsafeTestServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to TestServer will
+// result in compilation errors.
+type UnsafeTestServer interface {
+	mustEmbedUnimplementedTestServer()
+}
+
+func RegisterTestServer(s grpc.ServiceRegistrar, srv TestServer) {
+	s.RegisterService(&Test_ServiceDesc, srv)
+}
+
+func _Test_Test_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(TestRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(TestServer).Test(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/pb.Test/Test",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(TestServer).Test(ctx, req.(*TestRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// Test_ServiceDesc is the grpc.ServiceDesc for Test service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Test_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "pb.Test",
+	HandlerType: (*TestServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "Test",
+			Handler:    _Test_Test_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "test.proto",
+}
diff --git a/transport/grpc/_grpc_test/server.go b/transport/grpc/_grpc_test/server.go
index 26cbf34..98c1ad7 100644
--- a/transport/grpc/_grpc_test/server.go
+++ b/transport/grpc/_grpc_test/server.go
@@ -31,6 +31,8 @@
 }
 
 type serverBinding struct {
+	pb.UnimplementedTestServer
+
 	test grpctransport.Handler
 }
 
diff --git a/transport/http/proto/client.go b/transport/http/proto/client.go
index cc729f9..25c6dbd 100644
--- a/transport/http/proto/client.go
+++ b/transport/http/proto/client.go
@@ -8,7 +8,7 @@
 	"net/http"
 
 	httptransport "github.com/go-kit/kit/transport/http"
-	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/proto"
 )
 
 // EncodeProtoRequest is an EncodeRequestFunc that serializes the request as Protobuf.
diff --git a/transport/http/proto/generate.go b/transport/http/proto/generate.go
new file mode 100644
index 0000000..fe5893d
--- /dev/null
+++ b/transport/http/proto/generate.go
@@ -0,0 +1,4 @@
+package proto
+
+//go:generate protoc proto_test.proto --go_out=. --go_opt=Mproto_test.proto=github.com/go-kit/kit/transport/http/proto --go_opt=paths=source_relative
+//go:generate mv proto_test.pb.go proto_pb_test.go
diff --git a/transport/http/proto/proto_pb_test.go b/transport/http/proto/proto_pb_test.go
index 779d888..b8a1f7d 100644
--- a/transport/http/proto/proto_pb_test.go
+++ b/transport/http/proto/proto_pb_test.go
@@ -1,94 +1,158 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.26.0
+// 	protoc        v3.16.0
 // source: proto_test.proto
 
 package proto
 
 import (
-	fmt "fmt"
-	math "math"
-
-	proto "github.com/golang/protobuf/proto"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
 )
 
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
 
 type Cat struct {
-	Age                  int32    `protobuf:"varint,1,opt,name=Age,proto3" json:"Age,omitempty"`
-	Breed                string   `protobuf:"bytes,2,opt,name=Breed,proto3" json:"Breed,omitempty"`
-	Name                 string   `protobuf:"bytes,3,opt,name=Name,proto3" json:"Name,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Age   int32  `protobuf:"varint,1,opt,name=Age,proto3" json:"Age,omitempty"`
+	Breed string `protobuf:"bytes,2,opt,name=Breed,proto3" json:"Breed,omitempty"`
+	Name  string `protobuf:"bytes,3,opt,name=Name,proto3" json:"Name,omitempty"`
 }
 
-func (m *Cat) Reset()         { *m = Cat{} }
-func (m *Cat) String() string { return proto.CompactTextString(m) }
-func (*Cat) ProtoMessage()    {}
-func (*Cat) Descriptor() ([]byte, []int) {
-	return fileDescriptor_a794ba8d0e5440a3, []int{0}
+func (x *Cat) Reset() {
+	*x = Cat{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_proto_test_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
 }
 
-func (m *Cat) XXX_Unmarshal(b []byte) error {
-	return xxx_messageInfo_Cat.Unmarshal(m, b)
-}
-func (m *Cat) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
-	return xxx_messageInfo_Cat.Marshal(b, m, deterministic)
-}
-func (m *Cat) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Cat.Merge(m, src)
-}
-func (m *Cat) XXX_Size() int {
-	return xxx_messageInfo_Cat.Size(m)
-}
-func (m *Cat) XXX_DiscardUnknown() {
-	xxx_messageInfo_Cat.DiscardUnknown(m)
+func (x *Cat) String() string {
+	return protoimpl.X.MessageStringOf(x)
 }
 
-var xxx_messageInfo_Cat proto.InternalMessageInfo
+func (*Cat) ProtoMessage() {}
 
-func (m *Cat) GetAge() int32 {
-	if m != nil {
-		return m.Age
+func (x *Cat) ProtoReflect() protoreflect.Message {
+	mi := &file_proto_test_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Cat.ProtoReflect.Descriptor instead.
+func (*Cat) Descriptor() ([]byte, []int) {
+	return file_proto_test_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Cat) GetAge() int32 {
+	if x != nil {
+		return x.Age
 	}
 	return 0
 }
 
-func (m *Cat) GetBreed() string {
-	if m != nil {
-		return m.Breed
+func (x *Cat) GetBreed() string {
+	if x != nil {
+		return x.Breed
 	}
 	return ""
 }
 
-func (m *Cat) GetName() string {
-	if m != nil {
-		return m.Name
+func (x *Cat) GetName() string {
+	if x != nil {
+		return x.Name
 	}
 	return ""
 }
 
-func init() {
-	proto.RegisterType((*Cat)(nil), "Cat")
+var File_proto_test_proto protoreflect.FileDescriptor
+
+var file_proto_test_proto_rawDesc = []byte{
+	0x0a, 0x10, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x5f, 0x74, 0x65, 0x73, 0x74, 0x2e, 0x70, 0x72, 0x6f,
+	0x74, 0x6f, 0x22, 0x41, 0x0a, 0x03, 0x43, 0x61, 0x74, 0x12, 0x10, 0x0a, 0x03, 0x41, 0x67, 0x65,
+	0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x03, 0x41, 0x67, 0x65, 0x12, 0x14, 0x0a, 0x05, 0x42,
+	0x72, 0x65, 0x65, 0x64, 0x18, 0x02, 0x20, 0x01, 0x28, 0x09, 0x52, 0x05, 0x42, 0x72, 0x65, 0x65,
+	0x64, 0x12, 0x12, 0x0a, 0x04, 0x4e, 0x61, 0x6d, 0x65, 0x18, 0x03, 0x20, 0x01, 0x28, 0x09, 0x52,
+	0x04, 0x4e, 0x61, 0x6d, 0x65, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
 }
 
-func init() { proto.RegisterFile("proto_test.proto", fileDescriptor_a794ba8d0e5440a3) }
+var (
+	file_proto_test_proto_rawDescOnce sync.Once
+	file_proto_test_proto_rawDescData = file_proto_test_proto_rawDesc
+)
 
-var fileDescriptor_a794ba8d0e5440a3 = []byte{
-	// 98 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0xe2, 0x12, 0x28, 0x28, 0xca, 0x2f,
-	0xc9, 0x8f, 0x2f, 0x49, 0x2d, 0x2e, 0xd1, 0x03, 0x33, 0x95, 0x1c, 0xb9, 0x98, 0x9d, 0x13, 0x4b,
-	0x84, 0x04, 0xb8, 0x98, 0x1d, 0xd3, 0x53, 0x25, 0x18, 0x15, 0x18, 0x35, 0x58, 0x83, 0x40, 0x4c,
-	0x21, 0x11, 0x2e, 0x56, 0xa7, 0xa2, 0xd4, 0xd4, 0x14, 0x09, 0x26, 0x05, 0x46, 0x0d, 0xce, 0x20,
-	0x08, 0x47, 0x48, 0x88, 0x8b, 0xc5, 0x2f, 0x31, 0x37, 0x55, 0x82, 0x19, 0x2c, 0x08, 0x66, 0x27,
-	0xb1, 0x81, 0x4d, 0x32, 0x06, 0x04, 0x00, 0x00, 0xff, 0xff, 0x5f, 0x95, 0x83, 0x0a, 0x5d, 0x00,
-	0x00, 0x00,
+func file_proto_test_proto_rawDescGZIP() []byte {
+	file_proto_test_proto_rawDescOnce.Do(func() {
+		file_proto_test_proto_rawDescData = protoimpl.X.CompressGZIP(file_proto_test_proto_rawDescData)
+	})
+	return file_proto_test_proto_rawDescData
 }
+
+var file_proto_test_proto_msgTypes = make([]protoimpl.MessageInfo, 1)
+var file_proto_test_proto_goTypes = []interface{}{
+	(*Cat)(nil), // 0: Cat
+}
+var file_proto_test_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_proto_test_proto_init() }
+func file_proto_test_proto_init() {
+	if File_proto_test_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_proto_test_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Cat); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_proto_test_proto_rawDesc,
+			NumEnums:      0,
+			NumMessages:   1,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_proto_test_proto_goTypes,
+		DependencyIndexes: file_proto_test_proto_depIdxs,
+		MessageInfos:      file_proto_test_proto_msgTypes,
+	}.Build()
+	File_proto_test_proto = out.File
+	file_proto_test_proto_rawDesc = nil
+	file_proto_test_proto_goTypes = nil
+	file_proto_test_proto_depIdxs = nil
+}
diff --git a/transport/http/proto/proto_test.go b/transport/http/proto/proto_test.go
index 7b59d71..2f1cd17 100644
--- a/transport/http/proto/proto_test.go
+++ b/transport/http/proto/proto_test.go
@@ -6,7 +6,7 @@
 	"net/http/httptest"
 	"testing"
 
-	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/proto"
 )
 
 func TestEncodeProtoRequest(t *testing.T) {
diff --git a/transport/http/proto/server.go b/transport/http/proto/server.go
index 9990081..a495cb8 100644
--- a/transport/http/proto/server.go
+++ b/transport/http/proto/server.go
@@ -6,7 +6,7 @@
 	"net/http"
 
 	httptransport "github.com/go-kit/kit/transport/http"
-	"github.com/golang/protobuf/proto"
+	"google.golang.org/protobuf/proto"
 )
 
 // EncodeProtoResponse is an EncodeResponseFunc that serializes the response as Protobuf.