diff --git a/requirements.txt b/requirements.txt
index 39672b6e45b..31d8264e094 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -3,7 +3,7 @@ PyYAML==5.3.1
 paho-mqtt==1.5.1
 colorlog==4.6.2
 tornado==6.0.4
-protobuf==3.13.0
+protobuf==3.15.6
 tzlocal==2.1
 pytz==2020.4
 pyserial==3.4