diff --git a/test-requirements.txt b/test-requirements.txt
index 9d8c11c..603325c 100644
--- a/test-requirements.txt
+++ b/test-requirements.txt
@@ -1,5 +1,5 @@
 pytest
 requests-mock
-mock
+mock;python_version < '3.3'
 bandit==1.7.5;python_version > '3'
 responses
\ No newline at end of file
diff --git a/tests/test_purge.py b/tests/test_purge.py
index b11ef19..8d40789 100644
--- a/tests/test_purge.py
+++ b/tests/test_purge.py
@@ -1,6 +1,5 @@
 import pytest
 import requests_mock
-import mock
 import responses
 
 try:
@@ -8,6 +7,11 @@
 except ImportError:
     from monotonic import monotonic
 
+try:
+    from unittest.mock import patch
+except ImportError:
+    from mock import patch
+
 from fastpurge import FastPurgeClient, FastPurgeError
 
 # pylint: disable=unused-argument
@@ -41,7 +45,7 @@ def requests_mocker():
 def no_thread_retries():
     """Suppress retries for the duration of this fixture."""
 
-    with mock.patch('more_executors.retry.ExceptionRetryPolicy') as policy_class:
+    with patch('more_executors.retry.ExceptionRetryPolicy') as policy_class:
         policy = policy_class.return_value
         policy.should_retry.return_value = False
         policy.sleep_time.return_value = 0.1