diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 719855ce..6dc88aa5 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -16,7 +16,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "pypy3.9"]
+        python-version: ["3.5", "3.6", "3.7", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "pypy3.9"]
 
     steps:
     - uses: actions/checkout@v4
diff --git a/setup.py b/setup.py
index 5f9dbc87..44acef9a 100644
--- a/setup.py
+++ b/setup.py
@@ -136,6 +136,7 @@ def build_setuptools():
             "Programming Language :: Python :: 3.10",
             "Programming Language :: Python :: 3.11",
             "Programming Language :: Python :: 3.12",
+            "Programming Language :: Python :: 3.13",
             "Programming Language :: Python :: Implementation :: CPython",
             "Programming Language :: Python :: Implementation :: PyPy",
             "Topic :: Internet :: WWW/HTTP",