diff --git a/requirements.txt b/requirements.txt
index 64732c9..62ee574 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ certifi==2019.11.28
 chardet==3.0.4
 idna==2.8
 mysql-connector-python==8.0.18
-protobuf==3.11.0
+protobuf==3.15.0
 python-dotenv==0.10.3
 requests==2.22.0
 six==1.13.0