diff --git a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/version.inc b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/version.inc
index d25b748bda..e9eea7196d 100644
--- a/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/version.inc
+++ b/libraries/AP_HAL_ChibiOS/hwdef/CarbonixCommon/version.inc
@@ -1 +1 @@
-define AP_CUSTOM_FIRMWARE_STRING "CxPilot-7.1.0-beta2"
+define AP_CUSTOM_FIRMWARE_STRING "CxPilot-7.1.0-beta2+"