diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 70411ea4a3..4744e5dc74 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -79,6 +79,7 @@ jobs:
             --install icepack \
             --install irksome \
             --install femlium \
+            --package-branch pyop2 ksagiyam/use_layout_vec_local_size \
             || (cat firedrake-install.log && /bin/false)
       - name: Install test dependencies
         run: |