diff --git a/ArduCopter/version.h b/ArduCopter/version.h
index 3b5b18028e..123945ad69 100644
--- a/ArduCopter/version.h
+++ b/ArduCopter/version.h
@@ -9,7 +9,7 @@
 #define THISFIRMWARE "ArduCopter V4.3.1-rc1"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 4,3,0,FIRMWARE_VERSION_TYPE_RC
+#define FIRMWARE_VERSION 4,3,1,FIRMWARE_VERSION_TYPE_RC
 
 #define FW_MAJOR 4
 #define FW_MINOR 3