diff --git a/.github/workflows/preview_on_downstream_repo.yaml b/.github/workflows/preview_on_downstream_repo.yaml
index 11cab310c..d1f41bc86 100644
--- a/.github/workflows/preview_on_downstream_repo.yaml
+++ b/.github/workflows/preview_on_downstream_repo.yaml
@@ -38,6 +38,12 @@ jobs:
           repository: ${{ inputs.repository }}
           token: ${{ secrets.GH_TOKEN_NEXTSTRAIN_BOT_REPO }}
 
+      # Apply https://github.com/nextstrain/nextstrain.org/pull/1041
+      - name: Fix Heroku build
+        run: |
+          git apply <(wget -q -O - https://github.com/nextstrain/nextstrain.org/pull/1041.patch)
+          git add build.sh
+
       - name: Install Auspice from PRs HEAD commit
         shell: bash
         working-directory: ${{ inputs.directory }}