diff --git a/.github/workflows/test_tutorials.yml b/.github/workflows/test_tutorials.yml
index c111d2d..8c1cd8d 100644
--- a/.github/workflows/test_tutorials.yml
+++ b/.github/workflows/test_tutorials.yml
@@ -37,6 +37,8 @@ jobs:
         uses: actions/setup-node@v7
         with:
           node-version: 22
+          # The newest release, not the runner's cached one: Astro raises its minimum often.
+          check-latest: true
           cache: npm
           cache-dependency-path: docs/package-lock.json
 
diff --git a/src/app/tests/unit/test_workflows.py b/src/app/tests/unit/test_workflows.py
new file mode 100644
index 0000000..7470f7e
--- /dev/null
+++ b/src/app/tests/unit/test_workflows.py
@@ -0,0 +1,14 @@
+"""The CI workflows: Node comes from the newest release, not the runner's tool cache."""
+
+from pathlib import Path
+
+import pytest
+
+ROOT = Path(__file__).resolve().parents[4]
+WORKFLOWS = sorted((ROOT / ".github" / "workflows").glob("*.yml"))
+
+
+@pytest.mark.parametrize("workflow", WORKFLOWS, ids=lambda path: path.name)
+def test_setup_node_checks_latest(workflow):
+    text = workflow.read_text()
+    assert text.count("actions/setup-node") == text.count("check-latest: true")