diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index c107673e43ab5a375a65348559d83b1473cbfe76..48ec5b71f0bcb3935f78662b4ea89896e479e482 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -91,7 +91,7 @@ jobs:
                 git clone "https://github.com/inducer/$DOWNSTREAM_PROJECT.git"
                 cd "$DOWNSTREAM_PROJECT"
                 echo "*** $DOWNSTREAM_PROJECT version: $(git rev-parse --short HEAD)"
-                sed -i "/egg=boxtree/ c git+file://$(readlink -f ..)#egg=boxtree" requirements.txt
+                sed -i "/egg=sumpy/ c git+file://$(readlink -f ..)#egg=sumpy" requirements.txt
                 export CONDA_ENVIRONMENT=.test-conda-env-py3.yml
                 # Avoid slow or complicated tests in downstream projects
                 export PYTEST_ADDOPTS="-k 'not (slowtest or octave or mpi)'"