diff --git a/ArduCopter/version.h b/ArduCopter/version.h
index 7993c32aa5..1e8c4dddcb 100644
--- a/ArduCopter/version.h
+++ b/ArduCopter/version.h
@@ -6,10 +6,10 @@
 
 #include "ap_version.h"
 
-#define THISFIRMWARE "ArduCopter V4.2.3-rc2"
+#define THISFIRMWARE "ArduCopter V4.2.3-rc3"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 4,2,3,FIRMWARE_VERSION_TYPE_RC
+#define FIRMWARE_VERSION 4,2,3,FIRMWARE_VERSION_TYPE_RC+3
 
 #define FW_MAJOR 4
 #define FW_MINOR 2