diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e5751aa..ef8765c 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,14 +14,14 @@ jobs:
   security:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
         with:
           fetch-depth: 0
       - name: gitleaks (secrets)
         uses: gitleaks/gitleaks-action@e0c47f4f8be36e29cdc102c57e68cb5cbf0e8d1e # v3.0.0
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       - name: semgrep (SAST)
@@ -35,7 +35,7 @@ jobs:
       run:
         working-directory: ui
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: 22
@@ -55,7 +55,7 @@ jobs:
       run:
         working-directory: worker
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: 22
@@ -70,8 +70,8 @@ jobs:
   lint-py:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       - run: pip install --quiet ruff==0.15.22 pytest==9.1.1 # pinned; lints tests/e2e/*.py + ingest/
@@ -81,7 +81,7 @@ jobs:
   actionlint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       # Pinned official installer (tag v1.7.7 + version arg both fixed) rather than a third-party action,
       # so nothing new needs allow-listing under the repo's selected+sha-pinned Actions policy.
       - run: bash <(curl -sSf https://raw.githubusercontent.com/rhysd/actionlint/v1.7.7/scripts/download-actionlint.bash) 1.7.7
@@ -91,7 +91,7 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request'
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: dependency review
         uses: actions/dependency-review-action@a1d282b36b6f3519aa1f3fc636f609c47dddb294 # v4
         with:
diff --git a/.github/workflows/codeql.yaml b/.github/workflows/codeql.yaml
index e54b5e6..2c10b89 100644
--- a/.github/workflows/codeql.yaml
+++ b/.github/workflows/codeql.yaml
@@ -24,17 +24,17 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@7188fc363630916deb702c7fdcf4e481b751f97a # v4
+        uses: github/codeql-action/init@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4
         with:
           languages: javascript-typescript
           queries: security-extended
 
       - name: Autobuild
-        uses: github/codeql-action/autobuild@7188fc363630916deb702c7fdcf4e481b751f97a # v4
+        uses: github/codeql-action/autobuild@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@7188fc363630916deb702c7fdcf4e481b751f97a # v4
+        uses: github/codeql-action/analyze@cdf488f595d80d6e07e03d4674febd5ab45fa938 # v4
 ...
diff --git a/.github/workflows/d1-verify.yml b/.github/workflows/d1-verify.yml
index f10b5b9..f8770fd 100644
--- a/.github/workflows/d1-verify.yml
+++ b/.github/workflows/d1-verify.yml
@@ -43,7 +43,7 @@ jobs:
       CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
       CHECK: ${{ inputs.check }} # via env, never interpolated into the command line
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: 22
diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 50ef002..eec8de6 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -33,7 +33,7 @@ jobs:
       CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN }}
       CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
         with:
           node-version: 22
diff --git a/.github/workflows/ingest.yml b/.github/workflows/ingest.yml
index 0204f01..ee66456 100644
--- a/.github/workflows/ingest.yml
+++ b/.github/workflows/ingest.yml
@@ -14,8 +14,8 @@ jobs:
   seed:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       # seed.py is stdlib-only: nothing to install. It exits non-zero if any artifact came out
diff --git a/.github/workflows/lint-md-links.yml b/.github/workflows/lint-md-links.yml
index 93a3787..f35d328 100644
--- a/.github/workflows/lint-md-links.yml
+++ b/.github/workflows/lint-md-links.yml
@@ -19,6 +19,6 @@ jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - run: npx --yes markdownlint-cli2 "**/*.md"
 ...
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 4b84488..1fafa7e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -14,7 +14,7 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Create release with the CHANGELOG section as notes
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/tier3-monitor.yml b/.github/workflows/tier3-monitor.yml
index 695aecc..32a8066 100644
--- a/.github/workflows/tier3-monitor.yml
+++ b/.github/workflows/tier3-monitor.yml
@@ -18,8 +18,8 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 20
     steps:
-      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
-      - uses: actions/setup-python@ece7cb06caefa5fff74198d8649806c4678c61a1 # v6.3.0
+      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
+      - uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.12"
       - name: Install patchright + Chromium
@@ -41,7 +41,7 @@ jobs:
               echo "no summary.json produced (sweep crashed before writing it)"
             fi
           } >> "$GITHUB_STEP_SUMMARY"
-      - uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         if: always()
         with:
           name: tier3-results