diff --git a/requirements.txt b/requirements.txt
index 14b70040..50d397e9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-numpy>=1.19.5
+numpy>=1.19.5,<2
 pandas>=2.0.0
 scipy>=1.6.1
 scikit-learn>=1.5.0