diff --git a/setup.py b/setup.py
index <HASH>..<HASH> 100644
--- a/setup.py
+++ b/setup.py
@@ -35,6 +35,8 @@ setup(
         'Intended Audience :: Science/Research',
         'License :: OSI Approved :: Apache Software License',
         'Operating System :: POSIX :: Linux',
+        'Operating System :: MacOS :: MacOS X',
+        'Operating System :: Microsoft :: Windows',
         'Programming Language :: Python',
         'Topic :: Scientific/Engineering',
     ],
added MacOSX and Windows classifiers