diff --git a/.github/workflows/project-review-status.yml b/.github/workflows/project-review-status.yml
index 730208e..af97396 100644
--- a/.github/workflows/project-review-status.yml
+++ b/.github/workflows/project-review-status.yml
@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Update Project Status to Review Needed
-        uses: actions/github-script@v7
+        uses: actions/github-script@f28e40c7f34bde8b3046d885e986cb6290c5673b # v7
         with:
           # Use the PAT stored in repository secrets (has project write access)
           github-token: ${{ secrets.PROJECT_TOKEN }}
diff --git a/.github/workflows/validate-json.yml b/.github/workflows/validate-json.yml
index 72ccc75..fa2e4a5 100644
--- a/.github/workflows/validate-json.yml
+++ b/.github/workflows/validate-json.yml
@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2
 
       - name: Check for duplicates
         run : |