diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..2c48305b
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns: ["*"]
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/github-test.yaml b/.github/workflows/github-test.yaml
index e28e9397..52e5cd03 100644
--- a/.github/workflows/github-test.yaml
+++ b/.github/workflows/github-test.yaml
@@ -30,7 +30,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
         with:
           sparse-checkout: |
             .github
@@ -47,7 +47,7 @@ jobs:
           args: -color -verbose
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
           # actions/github-script@v8 uses Node 24
           node-version: 24.x
@@ -56,7 +56,7 @@ jobs:
         run: npm ci --omit dev
 
       - name: Verify all modules are importable
-        uses: actions/github-script@v8
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             const { join } = await import("path");
@@ -75,7 +75,7 @@ jobs:
       - run: npm run test:ci
 
       - name: Archive code coverage results
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: code-coverage-report-${{ matrix.os }}
           path: ./.github/coverage
diff --git a/.github/workflows/staging-lint-checks.yaml b/.github/workflows/staging-lint-checks.yaml
index fec42504..d8e0e82d 100644
--- a/.github/workflows/staging-lint-checks.yaml
+++ b/.github/workflows/staging-lint-checks.yaml
@@ -26,15 +26,15 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout validator repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Setup Node.js
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
           node-version: 24
 
       - name: Checkout specs repository (sparse - only needed RPs)
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
         with:
           repository: ${{ env.SPEC_REPO }}
           path: ${{ env.SPEC_CHECKOUT_PATH }}
@@ -61,7 +61,7 @@ jobs:
         working-directory: .github
 
       - name: Extract rules and run AutoRest validation
-        uses: actions/github-script@v8
+        uses: actions/github-script@ed597411d8f924073f98dfc5c65a23a2325f34cd # v8.0.0
         with:
           script: |
             const { default: runInGitHubActions } = await import('${{ github.workspace }}/.github/workflows/src/extract-rule-names-and-run-validation.js');
@@ -69,7 +69,7 @@ jobs:
 
       - name: Upload findings artifact
         if: always()
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: linter-findings
           path: artifacts/linter-findings.txt
diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 7e7a3fb1..124a5619 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -21,10 +21,10 @@ jobs:
     runs-on: ${{ fromJSON('{"ubuntu":"ubuntu-24.04", "windows":"windows-2022"}')[matrix.os] }}
 
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
 
       - name: Use Node ${{ matrix.node-version }}.x
-        uses: actions/setup-node@v6
+        uses: actions/setup-node@249970729cb0ef3589644e2896645e5dc5ba9c38 # v6.5.0
         with:
           node-version: ${{ matrix.node-version }}.x
 
@@ -49,7 +49,7 @@ jobs:
 
       - name: Upload npm packages
         if: contains(matrix.os, 'ubuntu')
-        uses: actions/upload-artifact@v6
+        uses: actions/upload-artifact@b7c566a772e6b6bfb58ed0dc250532a479d7789f # v6.0.0
         with:
           name: packages
           path: |