diff --git a/APMrover2/version.h b/APMrover2/version.h
index cf25ee1fe4..0651ae21a4 100644
--- a/APMrover2/version.h
+++ b/APMrover2/version.h
@@ -6,12 +6,12 @@
 
 #include "ap_version.h"
 
-#define THISFIRMWARE "ArduRover V4.0.1-dev"
+#define THISFIRMWARE "ArduRover V4.1.0-dev"
 
 // the following line is parsed by the autotest scripts
-#define FIRMWARE_VERSION 4,0,1,FIRMWARE_VERSION_TYPE_DEV
+#define FIRMWARE_VERSION 4,1,0,FIRMWARE_VERSION_TYPE_DEV
 
 #define FW_MAJOR 4
-#define FW_MINOR 0
-#define FW_PATCH 1
+#define FW_MINOR 1
+#define FW_PATCH 0
 #define FW_TYPE FIRMWARE_VERSION_TYPE_DEV