1 diff --git a/setup.py b/setup.py
2 index 6ef292f..332ad45 100644
5 @@ -17,7 +17,7 @@ trove_classifiers = [
6 setup(name="magic-wormhole-mailbox-server",
7 version=versioneer.get_version(),
8 description="Securely transfer data between computers",
9 - long_description=open('README.md', 'rU').read(),
10 + long_description=open('README.md').read(),
11 long_description_content_type='text/markdown',
12 author="Brian Warner",
13 author_email="warner-magic-wormhole@lothar.com",