diff --git a/.github/workflows/preview_comment.yaml b/.github/workflows/preview_comment.yaml
index a856e21de4..c834013bf0 100644
--- a/.github/workflows/preview_comment.yaml
+++ b/.github/workflows/preview_comment.yaml
@@ -17,6 +17,8 @@ jobs:
         permissions:
             # Needed to manage the comment
             pull-requests: write
+            # Needed to checkout private repositories
+            contents: read
 
         steps:
             - uses: actions/checkout@v4