diff --git a/requirements-mpi.txt b/requirements-mpi.txt
index 98557789c5..2c03d50a16 100644
--- a/requirements-mpi.txt
+++ b/requirements-mpi.txt
@@ -1,2 +1,2 @@
 mpi4py<4.0.2
-ipyparallel<8.9
\ No newline at end of file
+ipyparallel<9.1
\ No newline at end of file