diff --git a/.github/workflows/build-cloud.yml b/.github/workflows/build-cloud.yml
index bb6da6c..3dc4662 100644
--- a/.github/workflows/build-cloud.yml
+++ b/.github/workflows/build-cloud.yml
@@ -94,7 +94,7 @@ jobs:
 
       - uses: jakejarvis/s3-sync-action@master
         with:
-          args: --acl public-read --follow-symlinks
+          args: --acl private --follow-symlinks
         env:
           AWS_S3_BUCKET: ${{ github.event.inputs.domain }}
           AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}