diff --git a/requirements.txt b/requirements.txt
index b12c1a6..3abae9e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,6 +1,6 @@
 # GRPC / Protobuff related
-grpcio>=1.19.0
-grpcio-tools>=1.19.0
+grpcio>=1.19.0,<=1.48.2
+grpcio-tools>=1.19.0,<=1.48.2
 
 # Time related utils
 pytz