diff --git a/setup.py b/setup.py
index 85e6f75..7ebc282 100644
--- a/setup.py
+++ b/setup.py
@@ -35,5 +35,6 @@ setup(
         "requests>=2,<3",
         "spyder>=5,<6",
         "pyqtgraph==0.12.4",
+        "scipy<=1.9.1",
     ],
 )