diff --git a/CMakeLists.txt b/CMakeLists.txt
index 549cc80a924e0e8e0555905fb02c7b8976be9c82..f545d1e3478052c8768ed2a9388e6481bb01f80a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -34,7 +34,7 @@ set ( CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${walberla_SOURCE_DIR}/cmake )
 
 include ( waLBerlaFunctions )
 
-set_version( 3 0 )
+set_version( 4 0 )
 
 if( CMAKE_VERSION VERSION_LESS 2.8.3 )
    include( CMakeParseArgumentsCompat )