diff --git a/pyproject.toml b/pyproject.toml
index ad4ba488dd6..d874dd631ab 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -30,7 +30,7 @@ dependencies = [
     "google-api-python-client",
     "grpcio",
     "importlib-metadata >=4.0",
-    "numpy",
+    "numpy<2",
     "packaging",
     "protobuf",
     "psutil",