diff --git a/certbot-apache/tests/ocsp_prefetch_test.py b/certbot-apache/tests/ocsp_prefetch_test.py
index 10461a261..9e2c41537 100644
--- a/certbot-apache/tests/ocsp_prefetch_test.py
+++ b/certbot-apache/tests/ocsp_prefetch_test.py
@@ -8,7 +8,10 @@ import tempfile
 import time
 import unittest
 
-import mock
+try:
+    import mock
+except ImportError: # pragma: no cover
+    from unittest import mock # type: ignore
 # six is used in mock.patch()
 import six  # pylint: disable=unused-import