diff --git a/ArduPlane/version.h b/ArduPlane/version.h
index b0202ac001..0453d57dda 100644
--- a/ArduPlane/version.h
+++ b/ArduPlane/version.h
@@ -6,12 +6,12 @@
 
 #include "ap_version.h"
 
-#define THISFIRMWARE "ArduPlane V3.9.1beta1"
+#define THISFIRMWARE "ArduPlane V3.9.1beta2"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 3,9,1,FIRMWARE_VERSION_TYPE_BETA
+#define FIRMWARE_VERSION 3,9,1,FIRMWARE_VERSION_TYPE_BETA+1
 
 #define FW_MAJOR 3
 #define FW_MINOR 9
 #define FW_PATCH 1
-#define FW_TYPE FIRMWARE_VERSION_TYPE_BETA
+#define FW_TYPE FIRMWARE_VERSION_TYPE_BETA+1