diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 8f1ec24..5565255 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu, macos]
-        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
         # test pypy on ubuntu only to speed up CI, no reason why macos X pypy should fail separately
         include:
           - os: 'ubuntu'
@@ -31,12 +31,13 @@ jobs:
       OS: ${{ matrix.os }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: set up python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
+        allow-prereleases: true
 
     - run: pip install -r requirements/tests.txt -r requirements/pyproject.txt
 
@@ -53,11 +54,11 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
-    - uses: actions/setup-python@v4
+    - uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.12'
 
     - run: pip install -r requirements/linting.txt
 
@@ -68,12 +69,12 @@ jobs:
   docs:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
 
     - name: set up python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
-        python-version: '3.11'
+        python-version: '3.12'
 
     - name: install
       run: pip install -r requirements/docs.txt
@@ -112,16 +113,16 @@ jobs:
 
     steps:
       - name: checkout docs-site
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           ref: docs-site
 
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: set up python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: '3.9'
+          python-version: '3.12'
 
       - name: install
         run: pip install -r requirements/docs.txt
@@ -159,12 +160,12 @@ jobs:
       id-token: write
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: set up python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
-          python-version: '3.11'
+          python-version: '3.12'
 
       - name: install
         run: pip install -U build
diff --git a/pyproject.toml b/pyproject.toml
index 22e8163..5274cb5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,6 +30,7 @@ classifiers = [
     'Programming Language :: Python :: 3.10',
     'Programming Language :: Python :: 3.11',
     'Programming Language :: Python :: 3.12',
+    'Programming Language :: Python :: 3.13',
     'Topic :: Software Development :: Libraries :: Python Modules',
     'Topic :: Internet',
     'Typing :: Typed',