diff --git a/go.mod b/go.mod
index e23c4d5..ce6da40 100644
--- a/go.mod
+++ b/go.mod
@@ -1,10 +1,9 @@
 module go.unistack.org/micro-codec-urlencode/v3
 
-go 1.19
+go 1.20
 
 require (
 	go.unistack.org/micro-proto/v3 v3.3.1
 	go.unistack.org/micro/v3 v3.10.14
+	google.golang.org/protobuf v1.32.0
 )
-
-require google.golang.org/protobuf v1.28.1 // indirect
diff --git a/go.sum b/go.sum
index ffac1b9..3a09de1 100644
--- a/go.sum
+++ b/go.sum
@@ -136,8 +136,9 @@ google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlba
 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 v1.27.1/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 v1.32.0 h1:pPC6BG5ex8PDFnkbrGU3EixyhKcQ2aDuBS36lqK/C7I=
+google.golang.org/protobuf v1.32.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/urlencode.go b/urlencode.go
index d20bdd4..2ccaa0e 100644
--- a/urlencode.go
+++ b/urlencode.go
@@ -1,12 +1,14 @@
 // Package urlencode provides a urlencode codec
-package urlencode // import "go.unistack.org/micro-codec-urlencode/v3"
+package urlencode
 
 import (
+	"encoding/json"
 	"io"
 
 	pb "go.unistack.org/micro-proto/v3/codec"
 	"go.unistack.org/micro/v3/codec"
 	rutil "go.unistack.org/micro/v3/util/reflect"
+	"google.golang.org/protobuf/types/known/structpb"
 )
 
 type urlencodeCodec struct {
@@ -75,6 +77,16 @@ func (c *urlencodeCodec) Unmarshal(b []byte, v interface{}, opts ...codec.Option
 		return err
 	}
 
+	switch t := v.(type) {
+	case *structpb.Value:
+
+		buf, err := json.Marshal(mp)
+		if err == nil {
+			err = t.UnmarshalJSON(buf)
+		}
+		return err
+	}
+
 	return rutil.Merge(v, rutil.FlattenMap(mp), rutil.Tags([]string{"protobuf", "json", "xml", "yaml"}), rutil.SliceAppend(true))
 }