diff --git a/.github/workflows/demo.yml b/.github/workflows/demo.yml
index 6932e78..c26c123 100644
--- a/.github/workflows/demo.yml
+++ b/.github/workflows/demo.yml
@@ -16,15 +16,15 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: ⎔ Setup pnpm
-        uses: pnpm/action-setup@v3
+        uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3
         with:
           version: 9
 
       - name: ⎔ Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version: 22
           cache: pnpm
@@ -36,13 +36,13 @@ jobs:
         run: pnpm demo
 
       - name: 📄 Setup Pages
-        uses: actions/configure-pages@v5
+        uses: actions/configure-pages@983d7736d9b0ae728b81ab479565c72886d7745b # v5
 
       - name: 📤 Upload artifact
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@56afc609e74202658d3ffba0e8f6dda462b719fa # v3
         with:
           path: './demo/dist'
 
       - name: 🚀 Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 2e7e4fa..c1fc9ce 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -13,17 +13,17 @@ jobs:
   release:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
         with:
           fetch-depth: 0
 
       - name: ⎔ Setup pnpm
-        uses: pnpm/action-setup@v3
+        uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3
         with:
           version: 9
 
       - name: ⎔ Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version: 22
           registry-url: 'https://registry.npmjs.org'
@@ -80,7 +80,7 @@ jobs:
 
       - name: 📣 Notify release result
         if: always()
-        uses: marimo-team/internal-gh-actions/release-notification@main
+        uses: marimo-team/internal-gh-actions/release-notification@ba06d4db1f3c5c9b86983ce409e57196f8376777 # main
         with:
           status: ${{ job.status }}
           slack-webhook-url: ${{ secrets.SLACK_WEBHOOK_URL_RELEASES }}
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 2e54701..a1ff376 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,15 +21,15 @@ jobs:
       pull-requests: write
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: ⎔ Setup pnpm
-        uses: pnpm/action-setup@v3
+        uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d # v3
         with:
           version: 9
 
       - name: ⎔ Setup Node.js
-        uses: actions/setup-node@v4
+        uses: actions/setup-node@49933ea5288caeca8642d1e84afbd3f7d6820020 # v4
         with:
           node-version: 22
           cache: pnpm
@@ -45,28 +45,28 @@ jobs:
 
       - name: 📊 Report Coverage
         if: always()
-        uses: davelosert/vitest-coverage-report-action@v2
+        uses: davelosert/vitest-coverage-report-action@3c50566c523e04813df28de8f7c48dd97d663f1c # v2
         with:
           pr-number: auto
 
   security:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: 🔍 Run CodeQL
-        uses: github/codeql-action/init@v2
+        uses: github/codeql-action/init@b8d3b6e8af63cde30bdc382c0bc28114f4346c88 # v2
         with:
           languages: javascript
 
       - name: 🔍 Perform Analysis
-        uses: github/codeql-action/analyze@v2
+        uses: github/codeql-action/analyze@b8d3b6e8af63cde30bdc382c0bc28114f4346c88 # v2
 
 
   spelling:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4
 
       - name: 🔍 Spell Check Repo
-        uses: crate-ci/typos@v1.29.4
+        uses: crate-ci/typos@685eb3d55be2f85191e8c84acb9f44d7756f84ab # v1.29.4