test on Python 3.13 as well

.github/workflows/ci.yml

@@ -13,9 +13,9 @@ jobs:
     # https://github.community/t/github-actions-does-not-respect-skip-ci/17325/8
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     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.x"
     - name: Install dependencies
@@ -27,15 +27,15 @@ jobs:
     if: "! contains(toJSON(github.event.commits.*.message), '[skip ci]')"
     strategy:
       matrix:
-        python-version: [3.8, 3.9, "3.10", "3.11", "pypy-3.9"]
+        python-version: [3.8, "3.10", "3.11", "3.13", "pypy-3.9"]
         platform: [ubuntu-latest, windows-latest]
         exclude:
           - platform: windows-latest
             python-version: "pypy-3.9"
     steps:
-    - uses: actions/checkout@v3
+    - 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 }}
     - name: Install dependencies
@@ -62,12 +62,12 @@ jobs:
       - test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
       with:
         # setuptools_scm requires the git clone to not be 'shallow'
         fetch-depth: 0
     - name: Set up Python
-      uses: actions/setup-python@v4
+      uses: actions/setup-python@v5
       with:
         python-version: "3.x"
     - name: Install dependencies

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = lint, py3{8,9,10,11}, pypy3, coverage-report
+envlist = lint, py3{8,9,10,11,12,13}, pypy3, coverage-report
 skip_missing_interpreters = true
 
 [testenv]