diff --git a/setup.py b/setup.py
index 2e06ee7..8bbbce5 100644
--- a/setup.py
+++ b/setup.py
@@ -117,6 +117,8 @@ def build_extension(self, ext: CMakeExtension):
         'Programming Language :: C++',
         'Programming Language :: Python',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: Implementation :: CPython',
         'Topic :: System :: Archiving :: Compression',