diff --git a/oslo_versionedobjects/base.py b/oslo_versionedobjects/base.py
index 72af90a1e91a18992393c93c600d9bd9507c0a8d..ee7c13312ca44725820855da0ea576fca484b14b 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()