diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 1393d380b6..ebb87efff5 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -1,8 +1,8 @@
 /// -*- tab-width: 4; Mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*-
 
-#define THISFIRMWARE "ArduCopter V2.8.1a"
+#define THISFIRMWARE "ArduCopter V2.9-rc1"
 /*
- *  ArduCopter Version 2.8
+ *  ArduCopter Version 2.9
  *  Lead author:	Jason Short
  *  Based on code and ideas from the Arducopter team: Randy Mackay, Pat Hickey, Jose Julio, Jani Hirvinen, Andrew Tridgell, Justin Beech, Adam Rivera, Jean-Louis Naudin, Roberto Navoni
  *  Thanks to:	Chris Anderson, Mike Smith, Jordi Munoz, Doug Weibel, James Goppert, Benjamin Pelletier, Robert Lefebvre, Marco Robustini