diff --git a/qubes/tests/__init__.py b/qubes/tests/__init__.py
index 0591fa57c..9ffeb4d05 100644
--- a/qubes/tests/__init__.py
+++ b/qubes/tests/__init__.py
@@ -45,6 +45,7 @@
 import time
 import traceback
 import unittest
+import unittest.mock
 from distutils import spawn
 
 import gc