diff --git a/.github/workflows/delete-workflow-runs.yml b/.github/workflows/delete-workflow-runs.yml
index 82d680a..a2b0949 100644
--- a/.github/workflows/delete-workflow-runs.yml
+++ b/.github/workflows/delete-workflow-runs.yml
@@ -1,3 +1,4 @@
+# https://github.com/marketplace/actions/delete-workflow-runs
 name: Delete old workflow runs
 on:
   schedule:
@@ -8,11 +9,12 @@ jobs:
     runs-on: ubuntu-latest
     permissions:
       actions: write
+      contents: read
     steps:
-      - name: Delete workflow runs
-        uses: Mattraks/delete-workflow-runs@v2
+      - name: Delete workflow runs    
+        uses: Mattraks/delete-workflow-runs@v2.0.6
         with:
           token: ${{ github.token }}
           repository: ${{ github.repository }}
           retain_days: 1
-          keep_minimum_runs: 5
+          keep_minimum_runs: 5
\ No newline at end of file