diff --git a/.github/workflows/deploy-pages.yml b/.github/workflows/deploy-pages.yml
index 0966a80..1483886 100644
--- a/.github/workflows/deploy-pages.yml
+++ b/.github/workflows/deploy-pages.yml
@@ -19,7 +19,7 @@ jobs:
       name: github-pages
       url: ${{ steps.deploy.outputs.page_url }}
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/configure-pages@45bfe0192ca1faeb007ade9deae92b16b8254a0d # v6.0.0
diff --git a/.github/workflows/index-health-monitor.yml b/.github/workflows/index-health-monitor.yml
index 31eb832..d187564 100644
--- a/.github/workflows/index-health-monitor.yml
+++ b/.github/workflows/index-health-monitor.yml
@@ -21,7 +21,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - name: Restore state from cache
-        uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         with:
           path: /tmp/health-monitor-state.json
           key: index-health-state-
@@ -565,7 +565,7 @@ jobs:
           done < "$NOTIFY_FILE"
 
       - name: Save state to cache
-        uses: actions/cache/save@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+        uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
         if: always() && inputs.dry_run != 'true'
         with:
           path: /tmp/health-monitor-state.json
diff --git a/.github/workflows/monthly-gap-analysis.yml b/.github/workflows/monthly-gap-analysis.yml
index 853ed5c..292eaa2 100644
--- a/.github/workflows/monthly-gap-analysis.yml
+++ b/.github/workflows/monthly-gap-analysis.yml
@@ -48,13 +48,13 @@ jobs:
       # Needed to list and download the prior run's state artifact via `gh`.
       actions: read
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
 
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: "22"
+          node-version: "24"
 
       - run: npm ci
 
diff --git a/.github/workflows/publish-docker.yml b/.github/workflows/publish-docker.yml
index 5c0f25a..cf4ae39 100644
--- a/.github/workflows/publish-docker.yml
+++ b/.github/workflows/publish-docker.yml
@@ -46,13 +46,13 @@ jobs:
           fi
           echo "ref=${REF}" >> "$GITHUB_OUTPUT"
           echo "Building Docker image for ref: ${REF}"
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           ref: ${{ steps.ref.outputs.ref }}
           persist-credentials: false
-      - uses: docker/setup-qemu-action@ce360397dd3f832beb865e1373c09c0e9f86d70a # v4.0.0
-      - uses: docker/setup-buildx-action@d7f5e7f509e45cec5c76c4d5afdd7de93d0b3df5 # v4.1.0
-      - uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9 # v3
+      - uses: docker/setup-qemu-action@96fe6ef7f33517b61c61be40b68a1882f3264fb8 # v4.2.0
+      - uses: docker/setup-buildx-action@bb05f3f5519dd87d3ba754cc423b652a5edd6d2c # v4.2.0
+      - uses: docker/login-action@af1e73f918a031802d376d3c8bbc3fe56130a9b0 # v4
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -66,7 +66,7 @@ jobs:
       # the -local digest. Both multi-arch; cache shared via type=gha. One
       # Slack notify summarizes both at the end of the job.
       - name: Build & push default (slim) image
-        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           push: true
           tags: |
@@ -76,7 +76,7 @@ jobs:
           cache-from: type=gha
           cache-to: type=gha,mode=max
       - name: Build & push -local image (preinstalls @xenova/transformers)
-        uses: docker/build-push-action@f9f3042f7e2789586610d6e8b85c8f03e5195baf # v7.2.0
+        uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
         with:
           push: true
           build-args: |
diff --git a/.github/workflows/publish-release.yml b/.github/workflows/publish-release.yml
index a397106..8fc937b 100644
--- a/.github/workflows/publish-release.yml
+++ b/.github/workflows/publish-release.yml
@@ -11,7 +11,7 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           fetch-depth: 0
           persist-credentials: false
@@ -71,7 +71,7 @@ jobs:
       id-token: write
     steps:
       - name: Download build artifacts
-        uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
+        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8
         with:
           name: build-output
 
diff --git a/.github/workflows/security_zizmor.yml b/.github/workflows/security_zizmor.yml
index 3cf69f1..eec13bb 100644
--- a/.github/workflows/security_zizmor.yml
+++ b/.github/workflows/security_zizmor.yml
@@ -34,12 +34,12 @@ jobs:
       contents: read
     steps:
       - name: Checkout
-        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+        uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
 
       - name: Run zizmor
-        uses: zizmorcore/zizmor-action@5f14fd08f7cf1cb1609c1e344975f152c7ee938d # v0.5.6
+        uses: zizmorcore/zizmor-action@192e21d79ab29983730a13d1382995c2307fbcaa # v0.5.7
         with:
           min-severity: medium
           advanced-security: false
diff --git a/.github/workflows/static-quality.yml b/.github/workflows/static-quality.yml
index f2ba2ca..69cb6d5 100644
--- a/.github/workflows/static-quality.yml
+++ b/.github/workflows/static-quality.yml
@@ -13,11 +13,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with: { node-version: 22 }
+        with: { node-version: 24 }
       - run: npm ci
       # Cover the gap-analysis script too: it ships from scripts/ and was
       # previously neither format-checked nor type-checked in CI (the other
@@ -28,11 +28,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with: { node-version: 22 }
+        with: { node-version: 24 }
       - run: npm ci
       # The root tsconfig excludes scripts/ (rootDir: src), so `npm run build`
       # never type-checks the shipped scheduled scripts. tsconfig.scripts.json
@@ -43,11 +43,11 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with: { node-version: 22 }
+        with: { node-version: 24 }
       - run: npm ci
       - run: npm run build
 
@@ -55,22 +55,22 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 5
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with: { node-version: 22 }
+        with: { node-version: 24 }
       - run: ./scripts/check-version-sync.sh
 
   test:
     runs-on: ubuntu-latest
     timeout-minutes: 10
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
-        with: { node-version: 22 }
+        with: { node-version: 24 }
       - run: npm ci
       - run: npm run build
       - run: npm test
diff --git a/.github/workflows/update-competitive-matrix.yml b/.github/workflows/update-competitive-matrix.yml
index 64134c3..2347fb0 100644
--- a/.github/workflows/update-competitive-matrix.yml
+++ b/.github/workflows/update-competitive-matrix.yml
@@ -14,12 +14,12 @@ jobs:
       contents: write
       pull-requests: write
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: "22"
+          node-version: "24"
       - run: npm ci
       - run: npx tsx scripts/update-competitive-matrix.ts --summary /tmp/matrix-summary.md
       - name: Check for changes
diff --git a/.github/workflows/weekly-search-report.yml b/.github/workflows/weekly-search-report.yml
index e59b9b7..f00c1a3 100644
--- a/.github/workflows/weekly-search-report.yml
+++ b/.github/workflows/weekly-search-report.yml
@@ -50,13 +50,13 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
-      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
         with:
           persist-credentials: false
 
       - uses: actions/setup-node@48b55a011bda9f5d6aeb4c2d9c7362e8dae4041e # v6.4.0
         with:
-          node-version: "22"
+          node-version: "24"
 
       - run: npm ci