diff --git a/Doc/Doxygen/Doxyfile b/Doc/Doxygen/Doxyfile
index dee54f48ac57f89617e6e802b70ce09668ea29c4..47a14e887c6351bcde3d6fb72f98f8844d31e7ce 100644
--- a/Doc/Doxygen/Doxyfile
+++ b/Doc/Doxygen/Doxyfile
@@ -38,7 +38,7 @@ PROJECT_NAME           = "BornAgain"
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 1.11.0
+PROJECT_NUMBER         = 1.11.99
 
 # 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
diff --git a/VERSION.cmake b/VERSION.cmake
index 5c873adac5ef075fbe4852ed948b61934741fb92..67700ffd110e58836e4cae264b278362888f6470 100644
--- a/VERSION.cmake
+++ b/VERSION.cmake
@@ -1,3 +1,3 @@
 set(BornAgain_VERSION_MAJOR 1)
 set(BornAgain_VERSION_MINOR 11)
-set(BornAgain_VERSION_PATCH 0)
+set(BornAgain_VERSION_PATCH 99)