diff --git a/cms/djangoapps/contentstore/tests/test_contentstore.py b/cms/djangoapps/contentstore/tests/test_contentstore.py
index 8c20b1178e..4908b9e417 100644
--- a/cms/djangoapps/contentstore/tests/test_contentstore.py
+++ b/cms/djangoapps/contentstore/tests/test_contentstore.py
@@ -10,6 +10,7 @@ from fs.osfs import OSFS
 import copy
 from json import loads
 import traceback
+from datetime import timedelta
 
 from django.contrib.auth.models import User
 from django.dispatch import Signal