diff --git a/setup.py b/setup.py
index f856f2d..2c52063 100644
--- a/setup.py
+++ b/setup.py
@@ -1,24 +1,30 @@
+# Copyright (C) 2016-2020  The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
 from setuptools import setup, find_packages
 
 setup(
     name='swh-sandbox',
     description='Sandbox project',
+    python_requires=">=3.7",
     version='0.0.3',
     author='Software Heritage developers',
     author_email='swh-devel@inria.fr',
     url='https://forge.softwareheritage.org/source/sandbox',
     packages=find_packages(),
     include_package_data=True,
     classifiers=[
         "Programming Language :: Python :: 3",
         "Intended Audience :: Developers",
         "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",  # noqa
         "Operating System :: OS Independent",
         "Development Status :: 5 - Production/Stable",
     ],
     project_urls={
         'Bug Reports': 'https://forge.softwareheritage.org/maniphest',
         'Funding': 'https://www.softwareheritage.org/donate',
         'Source': 'https://forge.softwareheritage.org/source/sandbox',
     },
 )