diff --git a/constraints.txt b/constraints.txt
index 8448ac4..54ee5dc 100644
--- a/constraints.txt
+++ b/constraints.txt
@@ -1,3 +1,4 @@
 astroid==2.5.6
 pylint==2.8.3
 numpy>=1.20.0
+ipython<8.13;python_version<'3.9'