diff --git a/oslo_versionedobjects/base.py b/oslo_versionedobjects/base.py
index 7df5e52b827babbe1e8152c54c0025c0df1bdcf2..6881193568b4fdf2bd9270c998e8748e33bfca17 100644
--- a/oslo_versionedobjects/base.py
+++ b/oslo_versionedobjects/base.py
@@ -706,6 +706,9 @@ class ComparableVersionedObject(object):
             return self.obj_to_primitive() == obj.obj_to_primitive()
         return NotImplemented
 
+    def __hash__(self):
+        return super(ComparableVersionedObject, self).__hash__()
+
     def __ne__(self, obj):
         if hasattr(obj, 'obj_to_primitive'):
             return self.obj_to_primitive() != obj.obj_to_primitive()