diff --git a/setup.py b/setup.py
index a1e4d54..9aa7033 100644
--- a/setup.py
+++ b/setup.py
@@ -11,6 +11,7 @@ setuptools.setup(
 		'License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)',
 		'Programming Language :: Python :: 3.7',
 		'Programming Language :: Python :: 3.8',
+		'Operating System :: POSIX :: Linux',
 	],
 	packages = ['qwarc'],
 	setup_requires = ['setuptools_scm'],