Version 1.3.3
diff --git a/doc/Doxyfile.in b/doc/Doxyfile.in
index ba71f8f..7469abf 100644
--- a/doc/Doxyfile.in
+++ b/doc/Doxyfile.in
@@ -23,7 +23,7 @@
 # This could be handy for archiving the generated documentation or
 # if some version control system is used.
 
-PROJECT_NUMBER         = 1.3.2
+PROJECT_NUMBER         = 1.3.3
 
 # The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute)
 # base path where the generated documentation will be put.