diff --git a/Documentation/Doxyfile b/Documentation/Doxyfile
index a178dbba..451e1ff2 100644
--- a/Documentation/Doxyfile
+++ b/Documentation/Doxyfile
@@ -31,7 +31,7 @@ PROJECT_NAME           = "The Open Toolkit library"
 # This could be handy for archiving the generated documentation or 
 # if some version control system is used.
 
-PROJECT_NUMBER         = 1.0
+PROJECT_NUMBER         = 1.1
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
 # base path where the generated documentation will be put.