diff --git a/setup.py b/setup.py
index 8fd4807..97da583 100644
--- a/setup.py
+++ b/setup.py
@@ -44,7 +44,7 @@ def run_tests(self):
     license='Expat license',
     package_dir={'': 'src'},
     py_modules=['pep8ext_naming'],
-    install_requires=['flake8>=3.9.1', 'flake8_polyfill>=1.0.2,<2'],
+    install_requires=['flake8>=3.9.1'],
     zip_safe=False,
     entry_points={
         'flake8.extension': [