diff --git a/core/core.go b/core/core.go
index 4d704306..e1128775 100644
--- a/core/core.go
+++ b/core/core.go
@@ -21,7 +21,7 @@ import (
 var (
 	Version_x byte = 1
 	Version_y byte = 8
-	Version_z byte = 3
+	Version_z byte = 4
 )
 
 var (