diff --git a/dev-requirements.txt b/dev-requirements.txt
new file mode 100644
index 0000000..3397408
--- /dev/null
+++ b/dev-requirements.txt
@@ -0,0 +1,4 @@
+pep8
+pyflakes
+mccabe
+nose
diff --git a/setup.py b/setup.py
index d98428b..12dc391 100644
--- a/setup.py
+++ b/setup.py
@@ -52,6 +52,6 @@ setup(
         "Topic :: Software Development :: Libraries :: Python Modules",
         "Topic :: Software Development :: Quality Assurance",
     ],
-    tests_require=['nose', 'mock'],
+    tests_require=['nose'],
     test_suite='nose.collector',
 )