diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 529e020f1c6399dcb35b21df1e4b6647233b250b..06562cdc493601ce3c8bd24f3fb0ba61a231ea13 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -1,6 +1,6 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-#define THISFIRMWARE "ArduCopter V2.5.2"
+#define THISFIRMWARE "ArduCopter V2.5.3"
 /*
 ArduCopter Version 2.5
 Lead author:	Jason Short