diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 0fff428f43..dcf6ca74d3 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -83,6 +83,7 @@ jobs:
             --install defcon \
             --install gadopt \
             --install asQ \
+            --package-branch fiat pbrubeck/gen-quad \
             || (cat firedrake-install.log && /bin/false)
       - name: Install test dependencies
         run: |
diff --git a/tests/multigrid/test_p_multigrid.py b/tests/multigrid/test_p_multigrid.py
index 00027f1c5d..39437b0204 100644
--- a/tests/multigrid/test_p_multigrid.py
+++ b/tests/multigrid/test_p_multigrid.py
@@ -116,7 +116,7 @@ def test_prolong_low_order_to_restricted(tp_mesh, tp_family, variant):
         P = prolongation_matrix_matfree(uc, v).getPythonContext()
         P._prolong()
 
-    assert norm(ui + uf - uc, "L2") < 2E-14
+    assert norm(ui + uf - uc, "L2") < 1E-13
 
 
 @pytest.fixture(params=["triangles", "quadrilaterals"], scope="module")