diff --git a/ArduSub/version.h b/ArduSub/version.h
new file mode 100644
index 0000000000..7a90160bef
--- /dev/null
+++ b/ArduSub/version.h
@@ -0,0 +1,12 @@
+#pragma once
+
+#include "ap_version.h"
+
+#define THISFIRMWARE "ArduSub V3.5-dev"
+#define FIRMWARE_VERSION 3,5,0,FIRMWARE_VERSION_TYPE_DEV
+
+#ifndef GIT_VERSION
+#define FIRMWARE_STRING THISFIRMWARE
+#else
+#define FIRMWARE_STRING THISFIRMWARE " (" GIT_VERSION ")"
+#endif