diff --git a/app/requirements.txt b/app/requirements.txt
index 3a81f61..a6b199a 100644
--- a/app/requirements.txt
+++ b/app/requirements.txt
@@ -8,7 +8,7 @@ MarkupSafe==1.1.1
 marshmallow==2.19.2
 mysql-connector-python==8.0.16
 peewee==3.9.5
-protobuf==3.7.1
+protobuf==3.15.0
 PyMySQL==0.9.3
 python-dotenv==0.10.2
 six==1.12.0