diff --git a/go.mod b/go.mod
index 3253609..6bc8d9a 100644
--- a/go.mod
+++ b/go.mod
@@ -4,7 +4,6 @@ go 1.15
 
 require (
 	github.com/golang/protobuf v1.4.3
-	github.com/unistack-org/micro-proto v0.0.2-0.20210307161332-120b8d428313
 	github.com/unistack-org/micro/v3 v3.2.20
 	google.golang.org/protobuf v1.25.0
 )
diff --git a/go.sum b/go.sum
index 349da48..baf84b4 100644
--- a/go.sum
+++ b/go.sum
@@ -29,8 +29,6 @@ github.com/imdario/mergo v0.3.11/go.mod h1:jmQim1M+e3UYxmgPu/WyfjB3N3VflVyUjjjwH
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
 github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
-github.com/unistack-org/micro-proto v0.0.2-0.20210307161332-120b8d428313 h1:6BWhJJPVlsvkll5GLtxyQgvyZJDnYLEn2FuSoNmtZ4A=
-github.com/unistack-org/micro-proto v0.0.2-0.20210307161332-120b8d428313/go.mod h1:GYO53DWmeldRIo90cAdQx8bLr/WJMxW62W4ja74p1Ac=
 github.com/unistack-org/micro/v3 v3.2.20 h1:EY94FDfHR43QvKNjmCaVH8/7+D8bmLwySXbFK9iIQY0=
 github.com/unistack-org/micro/v3 v3.2.20/go.mod h1:y+fV+BPNK2IqGoLquRU396jTYifG0HCw3zxFfI4E0dc=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
diff --git a/proto.go b/proto.go
index e311ff9..2cd770c 100644
--- a/proto.go
+++ b/proto.go
@@ -7,7 +7,6 @@ import (
 
 	// nolint: staticcheck
 	oldproto "github.com/golang/protobuf/proto"
-	mproto "github.com/unistack-org/micro-proto/proto"
 	"github.com/unistack-org/micro/v3/codec"
 	"google.golang.org/protobuf/proto"
 )
@@ -18,8 +17,6 @@ func (c *protoCodec) Marshal(v interface{}) ([]byte, error) {
 	switch m := v.(type) {
 	case nil:
 		return nil, nil
-	case *mproto.Frame:
-		return m.Data, nil
 	case *codec.Frame:
 		return m.Data, nil
 	case proto.Message:
@@ -37,8 +34,6 @@ func (c *protoCodec) Unmarshal(d []byte, v interface{}) error {
 	switch m := v.(type) {
 	case nil:
 		return nil
-	case *mproto.Frame:
-		m.Data = d
 	case *codec.Frame:
 		m.Data = d
 	case proto.Message:
@@ -57,13 +52,6 @@ func (c *protoCodec) ReadBody(conn io.Reader, b interface{}) error {
 	switch m := b.(type) {
 	case nil:
 		return nil
-	case *mproto.Frame:
-		buf, err := ioutil.ReadAll(conn)
-		if err != nil {
-			return err
-		}
-		m.Data = buf
-		return nil
 	case *codec.Frame:
 		buf, err := ioutil.ReadAll(conn)
 		if err != nil {
@@ -91,9 +79,6 @@ func (c *protoCodec) Write(conn io.Writer, m *codec.Message, b interface{}) erro
 	switch m := b.(type) {
 	case nil:
 		return nil
-	case *mproto.Frame:
-		_, err := conn.Write(m.Data)
-		return err
 	case *codec.Frame:
 		_, err := conn.Write(m.Data)
 		return err