diff --git a/pyproject.toml b/pyproject.toml
index 1987b6ab..1c430fd8 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -48,7 +48,7 @@ dependencies = [
     "ray[default]>=2.5.1",
     "pandas>=2.0.2",
     "seaborn>=0.12.2",
-    "mpi4py>=3.1.4",
+    "mpi4py>=4.1.1",
 ]
 requires-python = ">=3.8"