diff --git a/pyproject.toml b/pyproject.toml
index 87996b3526..133c9198fc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -32,7 +32,7 @@ requires-python = ">=3.9,<4"
 dependencies = [
     "cloudpickle >= 1.5.0",
     "holidays >= 0.17",
-    "numpy >= 1.25.0",
+    "numpy >= 1.25.0, < 2.0.0",
     "packaging >= 20.0",
     "pandas >= 2.0.0",
     "psutil >= 5.7.0",