diff --git a/app/gui/oven_control/define.h b/app/gui/oven_control/define.h
index 22b8fa4..5c1c101 100644
--- a/app/gui/oven_control/define.h
+++ b/app/gui/oven_control/define.h
@@ -5,7 +5,7 @@
 
 #define MAJOR_VER   1
 #define MINOR_VER   6
-#define HOTFIX_VER  8
+#define HOTFIX_VER  9
 
 // 0 for normal
 // 1 for premium