diff --git a/setup.py b/setup.py
index 4833ff6..6047850 100644
--- a/setup.py
+++ b/setup.py
@@ -74,6 +74,7 @@ setuptools.setup(
         "flake8.options",
         "flake8.plugins",
     ],
+    python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
     install_requires=requires,
     extras_require=extras_require,
     entry_points={