diff --git a/setup.py b/setup.py
index 965546f4..11079f86 100644
--- a/setup.py
+++ b/setup.py
@@ -94,7 +94,7 @@ setup(
     license='MIT',
     url='http://gunicorn.org',
 
-    python_requires='>=3.4',
+    python_requires='>=3.5',
     install_requires=install_requires,
     classifiers=CLASSIFIERS,
     zip_safe=False,