diff --git a/CMakeLists.txt b/CMakeLists.txt
index 1afb13f01..d197829ad 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -54,7 +54,7 @@ PROJECT(OpenSceneGraph)
 SET(OPENSCENEGRAPH_MAJOR_VERSION 3)
 SET(OPENSCENEGRAPH_MINOR_VERSION 5)
 SET(OPENSCENEGRAPH_PATCH_VERSION 1)
-SET(OPENSCENEGRAPH_SOVERSION 141)
+SET(OPENSCENEGRAPH_SOVERSION 142)
 
 # 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
diff --git a/src/osgWrappers/serializers/osg/Drawable.cpp b/src/osgWrappers/serializers/osg/Drawable.cpp
index e144313f5..02fa5130d 100644
--- a/src/osgWrappers/serializers/osg/Drawable.cpp
+++ b/src/osgWrappers/serializers/osg/Drawable.cpp
@@ -47,4 +47,9 @@ REGISTER_OBJECT_WRAPPER( Drawable,
     ADD_OBJECT_SERIALIZER( EventCallback, osg::Callback, NULL );  // _eventCallback
     ADD_OBJECT_SERIALIZER( CullCallback, osg::Callback, NULL );  // _cullCallback
     ADD_OBJECT_SERIALIZER( DrawCallback, osg::Drawable::DrawCallback, NULL );  // _drawCallback
+
+    {
+        UPDATE_TO_VERSION_SCOPED( 142 )
+        ADD_HEXINT_SERIALIZER( NodeMask, 0xffffffff );  // _nodeMask
+    }
 }