diff --git a/pyproject.toml b/pyproject.toml
index 6c1b1bb08..c9fa01c77 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools", "future", "Cython", "wheel", "numpy", "gitpython", "mpi4py"]
+requires = ["setuptools", "future", "Cython", "wheel", "numpy", "gitpython"]
 build-backend = "setuptools.build_meta"