diff --git a/requirements.txt b/requirements.txt
index d54ecc1..beb85e2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,7 +12,7 @@ mccabe==0.6.1
 mysql-connector-python==8.0.13
 numpy==1.15.3
 pandas==0.23.4
-protobuf==3.6.1
+protobuf==3.15.0
 pylint==2.1.1
 python-dateutil==2.7.4
 pytz==2018.6