diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 72bb43d1..7a973d02 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -19,12 +19,13 @@ jobs:
         - '3.10'
         - '3.11'
         - '3.12'
+        - '3.13'
 
     steps:
       - uses: actions/checkout@v4
 
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
@@ -42,9 +43,9 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: '3.12'
+          python-version: '3.13'
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip tox
diff --git a/setup.cfg b/setup.cfg
index ab3364d6..fc9b8add 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -21,6 +21,7 @@ classifiers =
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
     Programming Language :: Python :: 3.12
+    Programming Language :: Python :: 3.13
     Topic :: Internet :: WWW/HTTP
 project_urls =
     Documentation = https://asgi.readthedocs.io/
diff --git a/tox.ini b/tox.ini
index a271b813..49c49bce 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 envlist =
-    py{38,39,310,311,312}-{test,mypy}
+    py{38,39,310,311,312,313}-{test,mypy}
     qa
 
 [testenv]