diff --git a/requirements-mpi.txt b/requirements-mpi.txt
index 7fba39ca9dd..daec7a33120 100644
--- a/requirements-mpi.txt
+++ b/requirements-mpi.txt
@@ -1,2 +1,2 @@
-mpi4py<4.0
+mpi4py<5.0
 ipyparallel<8.7
\ No newline at end of file