diff --git a/bin/osv/orm.py b/bin/osv/orm.py
index d7b406c0f3d..5cf0e08a02e 100644
--- a/bin/osv/orm.py
+++ b/bin/osv/orm.py
@@ -41,6 +41,7 @@ import calendar
 import copy
 import datetime
 import logging
+import warnings
 import operator
 import pickle
 import re