diff --git a/requirements.txt b/requirements.txt
index 6b50e84..5861e36 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,4 +3,4 @@ ray>=1.13.0
 cloudpickle
 pickle5==0.0.11; python_version < '3.8'
 protobuf
-grpcio
+grpcio<=1.51.3,>=1.32.0