diff --git a/kasten/CMakeLists.txt b/kasten/CMakeLists.txt
index 3549e6fe..7c4f4dea 100644
--- a/kasten/CMakeLists.txt
+++ b/kasten/CMakeLists.txt
@@ -1,16 +1,16 @@
-set( KASTEN_LIB_VERSION 0.3.0 )
-set( KASTEN_ABI_VERSION 3 )
+set( KASTEN_LIB_VERSION 0.4.0 )
+set( KASTEN_ABI_VERSION 4 )
 
 set( OKTETAKASTEN_MAJOR_VERSION 0 )
 set( OKTETAKASTEN_MINOR_VERSION 4 )
 set( OKTETAKASTEN_PATCHLEVEL_VERSION 0 )
 set( OKTETAKASTEN_VERSION "${OKTETAKASTEN_MAJOR_VERSION}.${OKTETAKASTEN_MINOR_VERSION}.${OKTETAKASTEN_PATCHLEVEL_VERSION}" )
 set( OKTETAKASTEN_ABI_VERSION 2 )
 
 set( OKTETAKASTEN_LIB_SOVERSION 0 )
 set( OKTETAKASTEN_LIB_VERSION ${OKTETAKASTEN_VERSION} )
 
 
 add_subdirectory( core )
 add_subdirectory( gui )
 add_subdirectory( controllers )
diff --git a/libs/kasten/CMakeLists.txt b/libs/kasten/CMakeLists.txt
index ff6126fb..e3bcc0af 100644
--- a/libs/kasten/CMakeLists.txt
+++ b/libs/kasten/CMakeLists.txt
@@ -1,14 +1,14 @@
 set( KASTEN_MAJOR_VERSION 0 )
-set( KASTEN_MINOR_VERSION 3 )
+set( KASTEN_MINOR_VERSION 4 )
 set( KASTEN_PATCHLEVEL_VERSION 0 )
 set( KASTEN_VERSION "${KASTEN_MAJOR_VERSION}.${KASTEN_MINOR_VERSION}.${KASTEN_PATCHLEVEL_VERSION}" )
-set( KASTEN_ABI_VERSION 3 )
+set( KASTEN_ABI_VERSION 4 )
 
-set( KASTEN_LIB_SOVERSION ${KASTEN_ABI_VERSION} )
+set( KASTEN_LIB_SOVERSION 0 )
 set( KASTEN_LIB_VERSION ${KASTEN_VERSION} )
 
 add_subdirectory( core )
 add_subdirectory( gui )
 add_subdirectory( controllers )
 
 #add_subdirectory( kparts )