diff --git a/src/main/build/version.h b/src/main/build/version.h
index bd8bca6830..01e7941fca 100644
--- a/src/main/build/version.h
+++ b/src/main/build/version.h
@@ -28,7 +28,7 @@
 #define FC_VERSION_MINOR            5  // increment when a minor release is made (small new feature, change etc)
 #define FC_VERSION_PATCH_LEVEL      3  // increment when a bug is fixed
 
-#define FC_VERSION_STRING STR(FC_VERSION_MAJOR) "." STR(FC_VERSION_MINOR) "." STR(FC_VERSION_PATCH_LEVEL) ".KAACK_4.5_V5"
+#define FC_VERSION_STRING STR(FC_VERSION_MAJOR) "." STR(FC_VERSION_MINOR) "." STR(FC_VERSION_PATCH_LEVEL) ".KAACK_4.5_V6"
 
 extern const char* const targetName;