diff --git a/src/osgWrappers/serializers/osgAnimation/RigGeometry.cpp b/src/osgWrappers/serializers/osgAnimation/RigGeometry.cpp
index 4d473366a..2787ec91c 100644
--- a/src/osgWrappers/serializers/osgAnimation/RigGeometry.cpp
+++ b/src/osgWrappers/serializers/osgAnimation/RigGeometry.cpp
@@ -72,5 +72,9 @@ REGISTER_OBJECT_WRAPPER( osgAnimation_RigGeometry,
 {
     ADD_USER_SERIALIZER( InfluenceMap );  // _vertexInfluenceMap
     ADD_OBJECT_SERIALIZER( SourceGeometry, osg::Geometry, NULL );  // _geometry
-    ADD_OBJECT_SERIALIZER( RigTransformImplementation, osgAnimation::RigTransform, NULL );  // _geometry
+
+    {
+        UPDATE_TO_VERSION_SCOPED( 145 )
+        ADD_OBJECT_SERIALIZER( RigTransformImplementation, osgAnimation::RigTransform, NULL );  // _geometry
+    }
 }