diff --git a/requirements.txt b/requirements.txt
index 3fe8e62f..f63cb644 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,2 +1,2 @@
-Cython>=0.29.24
+Cython>=0.29.28
 setuptools
diff --git a/setup.py b/setup.py
index d20972a5..862a3163 100644
--- a/setup.py
+++ b/setup.py
@@ -387,6 +387,8 @@ def write_file(filename, content):
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3.8',
+        'Programming Language :: Python :: 3.9',
+        'Programming Language :: Python :: 3.10',
         'Programming Language :: Other Scripting Engines',
         'Operating System :: OS Independent',
         'Topic :: Software Development',