diff --git a/.github/workflows/secret-scan.yml b/.github/workflows/secret-scan.yml
index 4a947e6..60474bf 100644
--- a/.github/workflows/secret-scan.yml
+++ b/.github/workflows/secret-scan.yml
@@ -34,14 +34,14 @@ jobs:
     timeout-minutes: 20
     steps:
       - name: Check out trusted base (scanner and config)
-        uses: actions/checkout@v5
+        uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5
         with:
           fetch-depth: 0
           persist-credentials: false
 
       - name: Check out the pull request as data only
         if: github.event_name == 'pull_request_target'
-        uses: actions/checkout@v5
+        uses: actions/checkout@fbc6f3992d24b796d5a048ff273f7fcc4a7b6c09 # v5
         with:
           ref: ${{ github.event.pull_request.head.sha }}
           path: pr-under-review