diff --git a/setup.py b/setup.py
index 5e512ae5..06706994 100644
--- a/setup.py
+++ b/setup.py
@@ -77,6 +77,7 @@ def get_long_description():
         "Programming Language :: Python :: 3.10",
         "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
+        "Programming Language :: Python :: 3.13",
     ],
     # Needed to bundle py.typed so mypy can see it:
     zip_safe=False,