diff --git a/.github/workflows/Continuous_Delivery.yml b/.github/workflows/Continuous_Delivery.yml
index 5f1c8d636..9df36d20c 100644
--- a/.github/workflows/Continuous_Delivery.yml
+++ b/.github/workflows/Continuous_Delivery.yml
@@ -41,6 +41,7 @@ jobs:
         ACCESS_TOKEN: ${{ secrets.ACCESS_TOKEN }}
         REACT_APP_MAPBOX_TOKEN: ${{ secrets.MAPBOX_TOKEN }}
         DB_URL: ${{ secrets.DB_URL }}
+        BASE_URL: ${{ /311-data }}
         BASE_BRANCH: master # The branch the action should deploy from.
         BRANCH: gh-pages # The branch the action should deploy to.
         FOLDER: dist # The folder the action should deploy.