diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index afc7ed8d3c..b9f125c68d 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -82,6 +82,7 @@ jobs:
             --install femlium \
             --install fascd \
             --install defcon \
+            --package-branch ufl ksagiyam/merge_upstream \
             || (cat firedrake-install.log && /bin/false)
       - name: Install test dependencies
         run: |