diff --git a/requirements.txt b/requirements.txt
index 098513f..c51b788 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ google-cloud-spanner==1.7.1
 googleapis-common-protos==1.5.9
 greenlet==0.4.9
 grpc-google-iam-v1==0.11.4
-grpcio==1.20.0
+grpcio==1.53.0
 grpcio-gcp==0.2.2
 gunicorn==19.9.0
 hawkauthlib==0.1.1