diff --git a/server_side_codes/apis/sleep_monitoring_messages/requirements.txt b/server_side_codes/apis/sleep_monitoring_messages/requirements.txt
index fdf163e8d..f677cbe07 100644
--- a/server_side_codes/apis/sleep_monitoring_messages/requirements.txt
+++ b/server_side_codes/apis/sleep_monitoring_messages/requirements.txt
@@ -5,7 +5,7 @@ itsdangerous==2.0.1
 Jinja2==3.0.3
 MarkupSafe==2.0.1
 mysql-connector-python==8.0.28
-protobuf==3.19.3
+protobuf==3.19.5
 python-dateutil==2.8.2
 pytz==2021.3
 six==1.16.0