diff --git a/CMakeLists.txt b/CMakeLists.txt
index c40ec1428..6ce8ea866 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@ project(EDM4HEP LANGUAGES CXX)
 
 # project version
 SET( ${PROJECT_NAME}_VERSION_MAJOR 0 )
-SET( ${PROJECT_NAME}_VERSION_MINOR 8 )
+SET( ${PROJECT_NAME}_VERSION_MINOR 9 )
 SET( ${PROJECT_NAME}_VERSION_PATCH 0 )
 
 SET( ${PROJECT_NAME}_VERSION  "${${PROJECT_NAME}_VERSION_MAJOR}.${${PROJECT_NAME}_VERSION_MINOR}.${${PROJECT_NAME}_VERSION_PATCH}" )