diff --git a/doxygen/genn-doxygen.conf b/doxygen/genn-doxygen.conf
index 9ae87367b0..3a8198dc15 100755
--- a/doxygen/genn-doxygen.conf
+++ b/doxygen/genn-doxygen.conf
@@ -38,7 +38,7 @@ PROJECT_NAME           = GeNN
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 3.1.0
+PROJECT_NUMBER         = 3.1.1
 
 # 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