diff --git a/tests/api_tests.py b/tests/api_tests.py
index d4c94c0c..21149818 100644
--- a/tests/api_tests.py
+++ b/tests/api_tests.py
@@ -7,6 +7,7 @@
 import sys
 import unittest
 import httpretty
+import mock
 
 from obs import OBS