diff --git a/CMakeLists.txt b/CMakeLists.txt
index 7b42e5288..0e40b0199 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -31,7 +31,7 @@ PROJECT(OpenSceneGraph)
 SET(OPENSCENEGRAPH_MAJOR_VERSION 2)
 SET(OPENSCENEGRAPH_MINOR_VERSION 9)
 SET(OPENSCENEGRAPH_PATCH_VERSION 10)
-SET(OPENSCENEGRAPH_SOVERSION 67)
+SET(OPENSCENEGRAPH_SOVERSION 68)
 
 # set to 0 when not a release candidate, non zero means that any generated 
 # svn tags will be treated as release candidates of given number