diff --git a/setup.py b/setup.py
index 4b742900..f8c776c7 100644
--- a/setup.py
+++ b/setup.py
@@ -62,7 +62,7 @@ setup(
     name="graphene",
     version=version,
     description="GraphQL Framework for Python",
-    long_description=codecs.open("README.rst", "r", "utf-8").read(),
+    long_description=codecs.open("README.rst", "r", encoding="ascii", errors="replace").read(),
     url="https://github.com/graphql-python/graphene",
     author="Syrus Akbary",
     author_email="me@syrusakbary.com",