diff --git a/core/core.go b/core/core.go
index e12a09fd..3802d102 100644
--- a/core/core.go
+++ b/core/core.go
@@ -19,7 +19,7 @@ import (
 var (
 	Version_x byte = 26
 	Version_y byte = 2
-	Version_z byte = 2
+	Version_z byte = 4
 )
 
 var (