diff --git a/dev-requirements.txt b/dev-requirements.txt
index 55ef3ec..a929ba7 100644
--- a/dev-requirements.txt
+++ b/dev-requirements.txt
@@ -1,5 +1,4 @@
 -r requirements.txt
-mock
 coveralls
 twine
 check-manifest
diff --git a/setup.py b/setup.py
index 6f5b9d4..56897e3 100644
--- a/setup.py
+++ b/setup.py
@@ -66,7 +66,7 @@
     # $ pip install -e .[dev,test]
     extras_require={
         'dev': ['check-manifest', 'pep8', 'pyflakes', 'twine'],
-        'test': ['coverage', 'mock'],
+        'test': ['coverage'],
     },
 )