diff --git a/Doxygenfile b/Doxygenfile
index 295695d4..31c0eb7f 100644
--- a/Doxygenfile
+++ b/Doxygenfile
@@ -32,7 +32,7 @@ PROJECT_NAME           = ChibiOS/GFX
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 1.5
+PROJECT_NUMBER         = 1.6
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer