diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0cde1104e..43d409031 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -4,7 +4,7 @@
 SET(OPENSCENEGRAPH_MAJOR_VERSION 3)
 SET(OPENSCENEGRAPH_MINOR_VERSION 5)
 SET(OPENSCENEGRAPH_PATCH_VERSION 10)
-SET(OPENSCENEGRAPH_SOVERSION 154)
+SET(OPENSCENEGRAPH_SOVERSION 155)
 
 
 # set to 0 when not a release candidate, non zero means that any generated