diff --git a/.github/workflows/nodejs.yml b/.github/workflows/nodejs.yml
index 742f489d..b78b71e4 100644
--- a/.github/workflows/nodejs.yml
+++ b/.github/workflows/nodejs.yml
@@ -25,11 +25,11 @@ jobs:
     permissions:
       contents: read
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
         with:
           node-version: ${{ matrix.node-version }}
           cache: pnpm
diff --git a/.github/workflows/publish.yml b/.github/workflows/publish.yml
index 4979af52..57ce2139 100644
--- a/.github/workflows/publish.yml
+++ b/.github/workflows/publish.yml
@@ -49,7 +49,7 @@ jobs:
       # The token expires after ~1 hour and is scoped to this repository only.
       - name: Generate GitHub App token
         id: app-token
-        uses: actions/create-github-app-token@v1
+        uses: actions/create-github-app-token@d72941d797fd3113feb6b93fd0dec494b13a2547 # v1
         with:
           app-id: ${{ secrets.RELEASE_APP_ID }}
           private-key: ${{ secrets.RELEASE_APP_PRIVATE_KEY }}
@@ -58,7 +58,7 @@ jobs:
       # authenticate as the GitHub App (which has bypass permissions).
       # persist-credentials: false prevents the default GITHUB_TOKEN from
       # being cached by git credential helpers, ensuring the app token is used.
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
         with:
           token: ${{ steps.app-token.outputs.token }}
           persist-credentials: false
@@ -74,10 +74,10 @@ jobs:
           git remote set-url origin "https://x-access-token:${{ steps.app-token.outputs.token }}@github.com/${{ github.repository }}.git"
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v6
+        uses: pnpm/action-setup@0977fd99725f1db4007ccb2928dbb4e90d06cc86 # v6
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6
         with:
           node-version: 24.x
           registry-url: https://registry.npmjs.org