diff --git a/bike-status-checker/requirements.txt b/bike-status-checker/requirements.txt
index 4af7a8b..5a1afc9 100644
--- a/bike-status-checker/requirements.txt
+++ b/bike-status-checker/requirements.txt
@@ -8,7 +8,7 @@ googleapis-common-protos==1.6.0
 grpc-google-iam-v1==0.12.3
 grpcio==1.23.0
 idna==2.8
-protobuf==3.9.1
+protobuf==3.18.3
 pyasn1==0.4.6
 pyasn1-modules==0.2.6
 PyMySQL==0.9.3