diff --git a/.github/workflows/event.yml b/.github/workflows/event.yml
index 6a973b4277fb..ea91e63cfe37 100644
--- a/.github/workflows/event.yml
+++ b/.github/workflows/event.yml
@@ -20,6 +20,6 @@ jobs:
     name: Handle ${{ github.event_name }} ${{ github.event.action }} event
     runs-on: ubuntu-latest # This image is intentionally set to "latest", and not to a specific version
     steps:
-      - uses: azure/azure-sdk-actions@main
+      - uses: azure/azure-sdk-actions@6a2d61414e790705ab24370421c0a5b04b65de53 # main
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/post-apiview.yml b/.github/workflows/post-apiview.yml
index 650ca244a567..e47fbdacd792 100644
--- a/.github/workflows/post-apiview.yml
+++ b/.github/workflows/post-apiview.yml
@@ -24,7 +24,7 @@ jobs:
       contains(github.event.check_run.name, 'SDK Validation') )
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
         with:
           sparse-checkout: "eng/common"
 
diff --git a/.github/workflows/verify-links.yml b/.github/workflows/verify-links.yml
index f41d380f17ac..799b20930776 100644
--- a/.github/workflows/verify-links.yml
+++ b/.github/workflows/verify-links.yml
@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6.1.0
         with:
           ref: ${{ github.event.pull_request.head.sha || github.event.check_run.head_sha || github.sha }}
           fetch-depth: 0