diff --git a/requirements.txt b/requirements.txt
index 56749ef..b947341 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ mysql-connector-python==8.0.19
 mysqlclient==1.4.6
 numpy==1.18.2
 Pillow==7.1.1
-protobuf==3.6.1
+protobuf==3.15.0
 pyparsing==2.4.7
 python-dateutil==2.8.1
 pytz==2019.3