diff --git a/ArduPlane/version.h b/ArduPlane/version.h
index 395eb51574..ef23bcff7e 100644
--- a/ArduPlane/version.h
+++ b/ArduPlane/version.h
@@ -6,12 +6,13 @@
 
 #include "ap_version.h"
 
-#define THISFIRMWARE "ArduPlane V3.9.9"
+#define THISFIRMWARE "ArduPlane V3.9.10beta1"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 3,9,9,FIRMWARE_VERSION_TYPE_OFFICIAL
+#define FIRMWARE_VERSION 3,9,10,FIRMWARE_VERSION_TYPE_BETA
 
 #define FW_MAJOR 3
 #define FW_MINOR 9
-#define FW_PATCH 9
-#define FW_TYPE FIRMWARE_VERSION_TYPE_OFFICIAL
+#define FW_PATCH 10
+#define FW_TYPE FIRMWARE_VERSION_TYPE_BETA
+