diff --git a/setup.py b/setup.py
index c5fc147..e9cbe7c 100644
--- a/setup.py
+++ b/setup.py
@@ -75,10 +75,19 @@ setup(
     classifiers=[
         'Development Status :: 4 - Beta',
         'Environment :: Win32 (MS Windows)',
+        'Environment :: X11 Applications',
         'Intended Audience :: End Users/Desktop',
         'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
         'Operating System :: Microsoft :: Windows',
+        'Operating System :: POSIX :: Linux',
         'Programming Language :: Python',
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
+        'Programming Language :: Python :: 3.4',
+        'Programming Language :: Python :: 3.5',
+        'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Topic :: Games/Entertainment :: Simulation',
         'Topic :: Multimedia :: Graphics :: 3D Rendering',
         'Topic :: Scientific/Engineering :: Visualization',