diff --git a/swarm/network/protocol.go b/swarm/network/protocol.go
index 7e7fee8ef..7f7ca5eed 100644
--- a/swarm/network/protocol.go
+++ b/swarm/network/protocol.go
@@ -44,7 +44,7 @@ const (
 // BzzSpec is the spec of the generic swarm handshake
 var BzzSpec = &protocols.Spec{
 	Name:       "bzz",
-	Version:    5,
+	Version:    6,
 	MaxMsgSize: 10 * 1024 * 1024,
 	Messages: []interface{}{
 		HandshakeMsg{},
diff --git a/swarm/network/protocol_test.go b/swarm/network/protocol_test.go
index b74b72c68..c052c536a 100644
--- a/swarm/network/protocol_test.go
+++ b/swarm/network/protocol_test.go
@@ -31,7 +31,7 @@ import (
 )
 
 const (
-	TestProtocolVersion   = 5
+	TestProtocolVersion   = 6
 	TestProtocolNetworkID = 3
 )