diff --git a/setup.cfg b/setup.cfg
index 3c6e79c..aa76bae 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,2 +1,2 @@
 [bdist_wheel]
-universal=1
+universal=0
diff --git a/setup.py b/setup.py
index f7f7d41..0a13ba3 100644
--- a/setup.py
+++ b/setup.py
@@ -28,6 +28,7 @@
 
 setup(
     name='mypy_extensions',
+    python_requires='>=3.5',
     version=version,
     description=description,
     long_description=long_description,