diff --git a/setup.py b/setup.py
index 700c70d..af2133c 100755
--- a/setup.py
+++ b/setup.py
@@ -43,7 +43,7 @@
     ],
     setup_requires=["pytest-runner"],
     tests_require=[
-        "mock==2.0.0",
+        "mock==5.2.0",
         "nose==1.3.7",
         "pytest==3.0.2",
         "pytest-cov==2.4.0",