diff --git a/Doxyfile.in b/Doxyfile.in
index fb06bea..3d340cb 100644
--- a/Doxyfile.in
+++ b/Doxyfile.in
@@ -38,7 +38,7 @@ PROJECT_NAME           = maa
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 0.2.0
+PROJECT_NUMBER         = @maa_VERSION_STRING@
 
 # 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 a