diff --git a/consul/config.go b/consul/config.go
index 541c2bce02..51b8a268d4 100644
--- a/consul/config.go
+++ b/consul/config.go
@@ -32,6 +32,7 @@ func init() {
 	protocolVersionMap = map[uint8]uint8{
 		1: 4,
 		2: 4,
+		3: 5,
 	}
 }
 
diff --git a/consul/server.go b/consul/server.go
index d8d5dc1df1..9cf46b3d80 100644
--- a/consul/server.go
+++ b/consul/server.go
@@ -27,7 +27,7 @@ import (
 // protocol versions.
 const (
 	ProtocolVersionMin uint8 = 1
-	ProtocolVersionMax       = 2
+	ProtocolVersionMax       = 3
 )
 
 const (