diff --git a/setup.py b/setup.py
index 55f77b6..a78bc09 100644
--- a/setup.py
+++ b/setup.py
@@ -36,7 +36,7 @@
     install_requires=['toolz'],
     extras_require={
         'dev': [
-            'flake8==2.4.0',
+            'flake8==3.3.0',
             'pytest==2.8.4',
             'pytest-cov==2.2.1',
         ],