Tested successfully with Python 3.10

Author: RKrahl

setup.py

@@ -107,6 +107,7 @@ class sdist(copy_file_mixin, distutils.command.sdist.sdist):
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
         'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Operating System :: OS Independent',
         'License :: OSI Approved :: Apache Software License',
     ],