diff --git a/.github/workflows/pip-build-mpich.sh b/.github/workflows/pip-build-mpich.sh
index dace9eb3..55557c06 100755
--- a/.github/workflows/pip-build-mpich.sh
+++ b/.github/workflows/pip-build-mpich.sh
@@ -5,4 +5,4 @@ mpirun -V
 pip install -U pip
 pip install -r requirements.txt
 pip install -U setuptools
-pip install --verbose --config-settings=setup-args="-DUSE_MPI=mpich" .
\ No newline at end of file
+pip install --verbose --config-settings=setup-args="-DUSE_MPI=mpich" .[numpy]