diff --git a/setup.py b/setup.py
index 2ab0a80..c406779 100644
--- a/setup.py
+++ b/setup.py
@@ -1,9 +1,10 @@
-import os
-from os import path
-
 from setuptools import setup, find_packages
 
 
+if sys.version_info[:3] < (3, 7):
+    raise SystemExit("nMigen requires Python 3.7+")
+
+
 setup(
     name="nmigen",
     version="0.1",