diff --git a/setup.py b/setup.py
index e5349b91ecfe1fe06de609dff9ac5e9133d6584e..40e11bf26ae14683b16b57175a0dbc347b5c8b9c 100644
--- a/setup.py
+++ b/setup.py
@@ -111,7 +111,12 @@ def main():
             'Natural Language :: English',
             'Programming Language :: C++',
             'Programming Language :: Python',
+            'Programming Language :: Python :: 2.5',
+            'Programming Language :: Python :: 2.6',
+            'Programming Language :: Python :: 2.7',
             'Programming Language :: Python :: 3',
+            'Programming Language :: Python :: 3.2',
+            'Programming Language :: Python :: 3.3',
             'Topic :: Multimedia :: Graphics :: 3D Modeling',
             'Topic :: Scientific/Engineering',
             'Topic :: Scientific/Engineering :: Mathematics',