diff --git a/core/core.go b/core/core.go
index 42197697..1d40a5d2 100644
--- a/core/core.go
+++ b/core/core.go
@@ -18,8 +18,8 @@ import (
 
 var (
 	Version_x byte = 25
-	Version_y byte = 10
-	Version_z byte = 15
+	Version_y byte = 12
+	Version_z byte = 1
 )
 
 var (