diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f2657f753..3ad3fdd35 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -137,7 +137,7 @@ jobs:
         with:
           repository: opendatateam/udata
           path: ${{ env.UDATA_WORKING_DIR }}
-          ref: main
+          ref: improve_cors
 
       - name: Set up uv
         uses: astral-sh/setup-uv@v6