diff --git a/cmd/xconn/main.go b/cmd/xconn/main.go
index efbc787..7b4e552 100644
--- a/cmd/xconn/main.go
+++ b/cmd/xconn/main.go
@@ -11,7 +11,6 @@ import (
 	"golang.org/x/exp/slices"
 	"gopkg.in/yaml.v3"
 
-	"github.com/xconnio/wampproto-protobuf/go"
 	"github.com/xconnio/xconn-go"
 )
 
@@ -25,8 +24,6 @@ const (
 
 	ConfigDir  = ".xconn"
 	ConfigFile = ConfigDir + "/config.yaml"
-
-	ProtobufSubProtocol = "wamp.2.protobuf"
 )
 
 type cmd struct {
@@ -96,10 +93,7 @@ func Run(args []string) error {
 
 		for _, transport := range config.Transports {
 			if slices.Contains(transport.Serializers, "protobuf") {
-				serializer := &wampprotobuf.ProtobufSerializer{}
-				protobufSpec := xconn.NewWSSerializerSpec(ProtobufSubProtocol, serializer)
-
-				if err := server.RegisterSpec(protobufSpec); err != nil {
+				if err := server.RegisterSpec(xconn.ProtobufSerializerSpec); err != nil {
 					return err
 				}
 			}
diff --git a/go.mod b/go.mod
index 1b5d2b0..2ef2f04 100644
--- a/go.mod
+++ b/go.mod
@@ -9,7 +9,7 @@ require (
 	github.com/gobwas/ws v1.4.0
 	github.com/stretchr/testify v1.8.4
 	github.com/xconnio/wampproto-go v0.0.0-20240630150305-316020c30fb7
-	github.com/xconnio/wampproto-protobuf/go v0.0.0-20240611092706-1e859744b5a2
+	github.com/xconnio/wampproto-protobuf/go v0.0.0-20240701141955-e9a1025ec125
 	golang.org/x/exp v0.0.0-20240525044651-4c93da0ed11d
 	gopkg.in/yaml.v3 v3.0.1
 )
diff --git a/go.sum b/go.sum
index ac5fad1..de0386d 100644
--- a/go.sum
+++ b/go.sum
@@ -40,6 +40,7 @@ github.com/xconnio/wampproto-go v0.0.0-20240630150305-316020c30fb7 h1:DrQEqUq14X
 github.com/xconnio/wampproto-go v0.0.0-20240630150305-316020c30fb7/go.mod h1:/b7EyR1X9EkOHPQBJGz1KvdjClo1GsalBGIzjQU5+i4=
 github.com/xconnio/wampproto-protobuf/go v0.0.0-20240611092706-1e859744b5a2 h1:1WkQ68ICoin0wTerMn5FrWl+ZbK4XS3/W2Wr86jS9K8=
 github.com/xconnio/wampproto-protobuf/go v0.0.0-20240611092706-1e859744b5a2/go.mod h1:SZAkbKSDucIUBrPgcKlT0SzVmktfrsD7OdP1chFR+vw=
+github.com/xconnio/wampproto-protobuf/go v0.0.0-20240701141955-e9a1025ec125/go.mod h1:SZAkbKSDucIUBrPgcKlT0SzVmktfrsD7OdP1chFR+vw=
 github.com/xhit/go-str2duration/v2 v2.1.0 h1:lxklc02Drh6ynqX+DdPyp5pCKLUQpRT8bp8Ydu2Bstc=
 github.com/xhit/go-str2duration/v2 v2.1.0/go.mod h1:ohY8p+0f07DiV6Em5LKB0s2YpLtXVyJfNt1+BlmyAsU=
 go.uber.org/goleak v1.2.1 h1:NBol2c7O1ZokfZ0LEU9K6Whx/KnwvepVetCUhtKja4A=
diff --git a/types.go b/types.go
index f227246..fc7be08 100644
--- a/types.go
+++ b/types.go
@@ -7,6 +7,7 @@ import (
 
 	"github.com/xconnio/wampproto-go/messages"
 	"github.com/xconnio/wampproto-go/serializers"
+	wampprotobuf "github.com/xconnio/wampproto-protobuf/go"
 )
 
 type (
@@ -27,6 +28,8 @@ var (
 		CborWebsocketProtocol, &serializers.CBORSerializer{})
 	MsgPackSerializerSpec = NewWSSerializerSpec( //nolint:gochecknoglobals
 		MsgpackWebsocketProtocol, &serializers.MsgPackSerializer{})
+	ProtobufSerializerSpec = NewWSSerializerSpec( //nolint:gochecknoglobals
+		ProtobufSubProtocol, &wampprotobuf.ProtobufSerializer{})
 )
 
 type BaseSession interface {
diff --git a/wamp.go b/wamp.go
index e8048f9..ea71daf 100644
--- a/wamp.go
+++ b/wamp.go
@@ -4,4 +4,5 @@ const (
 	JsonWebsocketProtocol    = "wamp.2.json"
 	MsgpackWebsocketProtocol = "wamp.2.msgpack"
 	CborWebsocketProtocol    = "wamp.2.cbor"
+	ProtobufSubProtocol      = "wamp.2.protobuf"
 )