diff --git a/.github/workflows/build-and-publish.yml b/.github/workflows/build-and-publish.yml
index d6fb864ca..61a4194d9 100644
--- a/.github/workflows/build-and-publish.yml
+++ b/.github/workflows/build-and-publish.yml
@@ -112,7 +112,7 @@ jobs:
           if [[ "$REPO_OWNER" == "temporalio" ]]; then
             echo "image_repo=temporalio" >> $GITHUB_OUTPUT
           else
-            echo "image_repo=$REPO_OWNER" >> $GITHUB_OUTPUT
+            echo "image_repo=ghcr.io/$REPO_OWNER" >> $GITHUB_OUTPUT
           fi
 
       - name: Check if release is latest