diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index c679730..b8a00b4 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -11,11 +11,11 @@ jobs:
     permissions:
       id-token: write # to authenticate as Trusted Publisher to pypi.org
     steps:
-      - uses: actions/checkout@v4
-      - uses: actions/setup-python@v4
+      - uses: actions/checkout@v5
+      - uses: actions/setup-python@v6
         with:
           python-version: "3.x"
-          cache: "pip"
+          cache: pip
       - run: pip install build
       - run: python -m build
       - uses: pypa/gh-action-pypi-publish@release/v1
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 89b5d4d..f9ff069 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -8,20 +8,22 @@ on:
 
 jobs:
   test:
+    strategy:
+      matrix:
+        python-version: ["3.9", "3.13"]
     runs-on: ubuntu-latest
     timeout-minutes: 60
-
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           filter: blob:none
           fetch-depth: 0
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
-          python-version: "3.12"
+          python-version: ${{ matrix.python-version }}
           cache: pip
 
       - name: Install project and dependencies
@@ -30,23 +32,32 @@ jobs:
       - name: Run test suite
         run: pytest -v --color=yes
 
-  check:
+  build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
         with:
           filter: blob:none
           fetch-depth: 0
-
-      - uses: actions/setup-python@v5
+      - uses: actions/setup-python@v6
         with:
-          python-version: "3.12"
-          # cache: pip # TODO: cache tools
-
+          python-version: "3.x"
+          cache: pip
       - name: Install tools
         run: pip install twine build
-
       - name: Build and check
         run: |
           python -m build
           twine check dist/*.whl
+
+  check:
+    if: always()
+    needs:
+      - build
+      - test
+    runs-on: ubuntu-latest
+    steps:
+      # https://github.com/marketplace/actions/alls-green#why
+      - uses: re-actors/alls-green@release/v1
+        with:
+          jobs: ${{ toJSON(needs) }}
diff --git a/pyproject.toml b/pyproject.toml
index 9cdfaa9..b7d70df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -9,7 +9,7 @@ license = "BSD-3-Clause"
 urls.Source = "https://github.com/scikit-learn-contrib/sklearn-ann"
 urls.Documentation = "https://sklearn-ann.readthedocs.io/"
 dynamic = ["version", "readme"]
-requires-python = "<3.13,>=3.9"  # enforced by scipy
+requires-python = ">=3.9"
 dependencies = [
     "scikit-learn>=1.6.0",
     "scipy>=1.11.1,<2.0.0",