diff --git a/.github/workflows/pr-validation.yml b/.github/workflows/pr-validation.yml
index 05f0591..2bccf1a 100644
--- a/.github/workflows/pr-validation.yml
+++ b/.github/workflows/pr-validation.yml
@@ -6,6 +6,9 @@ on:
   push:
     branches: [main]
 
+permissions:
+  contents: read
+
 env:
   # Consistent image tag for CI
   IMAGE_TAG: ci-${{ github.sha }}