diff --git a/core/core.go b/core/core.go
index bcb8eef78..6b4ffc340 100644
--- a/core/core.go
+++ b/core/core.go
@@ -20,7 +20,7 @@ import (
 var (
 	Version_x byte = 26
 	Version_y byte = 10
-	Version_z byte = 17
+	Version_z byte = 21
 )
 
 var (