diff --git a/tests/requirements.txt b/tests/requirements.txt
index 6a91ea46..c8b4f880 100644
--- a/tests/requirements.txt
+++ b/tests/requirements.txt
@@ -1,5 +1,5 @@
 coveralls
-mock
+mock; python_version < '3.3'
 pytest
 pytest-cov
 pytest-xdist
diff --git a/tests/test_forwarder.py b/tests/test_forwarder.py
index 40662d08..b5734ab1 100644
--- a/tests/test_forwarder.py
+++ b/tests/test_forwarder.py
@@ -14,12 +14,16 @@
 from functools import partial
 from contextlib import contextmanager
 
-import mock
 import paramiko
 import sshtunnel
 import shutil
 import tempfile
 
+try:
+    from unittest import mock
+except ImportError:
+    import mock
+
 if sys.version_info[0] == 2:
     from cStringIO import StringIO
     if sys.version_info < (2, 7):