diff --git a/pyproject.toml b/pyproject.toml
index 32d1680..30a5c28 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,8 @@ classifiers = [
     '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 :: Python :: Implementation :: PyPy',
 ]