diff --git a/MPI/pyproject.toml b/MPI/pyproject.toml
index 04e2b477..8925dcad 100644
--- a/MPI/pyproject.toml
+++ b/MPI/pyproject.toml
@@ -33,7 +33,7 @@ dependencies = [
     "numba_mpi>=0.30",
     "PyMPDATA",
     "PyMPDATA-examples",
-    "mpi4py==4.0.3",
+    "mpi4py==4.1.2",
     "h5py",
 ]
 dynamic = ["version"]