diff --git a/.github/dependabot.yml b/.github/dependabot.yml
index 7633606..7541263 100644
--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -7,6 +7,8 @@ updates:
       day: sunday
       time: '22:00'
       timezone: Etc/UTC
+    cooldown:
+      default-days: 7
     open-pull-requests-limit: 5
     groups:
       minor-and-patch:
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 9c368da..d4a2b84 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -18,6 +18,7 @@ jobs:
       - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           fetch-depth: 0
+          persist-credentials: false
       - uses: pnpm/action-setup@ea17c68df8912ef543352723c149a84f56e3d413 # v6.1.0
         with:
           version: 7
diff --git a/.github/workflows/zizmor.yml b/.github/workflows/zizmor.yml
new file mode 100644
index 0000000..8b59595
--- /dev/null
+++ b/.github/workflows/zizmor.yml
@@ -0,0 +1,31 @@
+name: Zizmor
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+  schedule:
+    # Weekly: online audits (known-vulnerable actions, impostor commits) can
+    # start failing without a code change.
+    - cron: '0 4 * * 1'
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+# Grouped per event, so a push to the default branch can never cancel or
+# displace the weekly run. Running pull request runs are cancelled by newer
+# ones; for other events GitHub still replaces a queued run with a newer one.
+concurrency:
+  group: zizmor-${{ github.event_name }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+
+jobs:
+  zizmor:
+    name: Zizmor
+    uses: owncloud/reusable-workflows/.github/workflows/zizmor.yml@main