diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 0000000..85cd0ee
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,14 @@
+# ACTIONS-PIN-1 (QNFO/qnfo-workers GHA-AUDIT-1, 2026-10-13): actions are pinned to commit SHAs with a "# vN" comment;
+# Dependabot moves the SHA and the comment together, once a month, in one grouped pull request.
+version: 2
+updates:
+  - package-ecosystem: github-actions
+    directory: "/"
+    schedule:
+      interval: monthly
+    groups:
+      actions:
+        patterns: ["*"]
+    commit-message:
+      prefix: "ci(actions)"
+    open-pull-requests-limit: 2
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7995fbc..4bc7337 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -17,8 +17,8 @@ jobs:
       matrix:
         python: ["3.9", "3.12"]
     steps:
-      - uses: actions/checkout@v6
-      - uses: actions/setup-python@v6
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
+      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6
         with:
           python-version: ${{ matrix.python }}
       - run: pip install .