diff --git a/.github/workflows/trivydb-cache.yaml b/.github/workflows/trivydb-cache.yaml
index cc17df24..fc912b2a 100644
--- a/.github/workflows/trivydb-cache.yaml
+++ b/.github/workflows/trivydb-cache.yaml
@@ -7,6 +7,9 @@ on:
     - cron: '0 0 * * *'  # Run daily at midnight UTC
   workflow_dispatch:  # Allow manual triggering
 
+permissions:
+  contents: read
+
 jobs:
   update-trivy-db:
     runs-on: ubuntu-latest