diff --git a/nomad/config.go b/nomad/config.go
index 62243f03e..7473b8ac4 100644
--- a/nomad/config.go
+++ b/nomad/config.go
@@ -34,7 +34,7 @@ var protocolVersionMap map[uint8]uint8
 
 func init() {
 	protocolVersionMap = map[uint8]uint8{
-		1: 5,
+		1: 4,
 	}
 }