diff --git a/step-6-deploy-grpc-server/requirements.txt b/step-6-deploy-grpc-server/requirements.txt
index 6faf5bb..0a1f14e 100644
--- a/step-6-deploy-grpc-server/requirements.txt
+++ b/step-6-deploy-grpc-server/requirements.txt
@@ -1,6 +1,6 @@
 pyee==5.0.0
 googleapis-common-protos==1.5.5
-grpcio==1.16.1
+grpcio==1.53.0
 grpcio-tools==1.16.1
 protobuf==3.6.1
 six==1.11.0
\ No newline at end of file