diff --git a/setup.py b/setup.py
index 126183e..c8baa2a 100644
--- a/setup.py
+++ b/setup.py
@@ -39,7 +39,7 @@
       author_email='info@precice.org',
       license='LGPL-3.0',
       packages=['fenicsxprecice'],
-      install_requires=['pyprecice~=3.0', 'scipy<1.15.0', 'numpy>=1.13.3', 'mpi4py'],
+      install_requires=['pyprecice~=3.0', 'scipy<1.15.0', 'numpy>=1.13.3', 'mpi4py<4'],
       tests_require=['sympy'],
       test_suite='tests',
       zip_safe=False)