diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 28f4c27..3e00cea 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,14 +11,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3.10", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["pypy3.10", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [windows-latest, macos-latest, ubuntu-latest]
 
     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 }}
           allow-prereleases: true
diff --git a/pyproject.toml b/pyproject.toml
index 60a043a..f11aedd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,6 +29,7 @@ classifiers = [
   "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",
 ]
diff --git a/tox.ini b/tox.ini
index 79f9e6a..c08988e 100644
--- a/tox.ini
+++ b/tox.ini
@@ -4,7 +4,7 @@ requires =
 env_list =
     cog
     lint
-    py{py3, 312, 311, 310, 39, 38}
+    py{py3, 313, 312, 311, 310, 39, 38}
 
 [testenv]
 extras =