diff --git a/ArduSub/version.h b/ArduSub/version.h
index 6d066973e2..21c0505112 100644
--- a/ArduSub/version.h
+++ b/ArduSub/version.h
@@ -9,7 +9,7 @@
 #define THISFIRMWARE "ArduSub V4.0.1"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 4,0,0,FIRMWARE_VERSION_TYPE_OFFICIAL
+#define FIRMWARE_VERSION 4,0,1,FIRMWARE_VERSION_TYPE_OFFICIAL
 
 #define FW_MAJOR 4
 #define FW_MINOR 0