diff --git a/setup.py b/setup.py
index bdd937fc..c3a4f8a4 100644
--- a/setup.py
+++ b/setup.py
@@ -63,6 +63,7 @@
     "classifiers": classifiers,
     "packages": packages,
     "entry_points": entry_points,
+    "python_requires": ">=3.5",
 }
 
 setup(**setup_args)