diff --git a/weatherbot/requirements.txt b/weatherbot/requirements.txt
index f30bc14..1a6b6cb 100644
--- a/weatherbot/requirements.txt
+++ b/weatherbot/requirements.txt
@@ -55,7 +55,7 @@ python-socketio==3.1.1
 pydot==1.4.1
 keras-applications==1.0.6
 keras-preprocessing==1.0.5
-protobuf==3.6.0
+protobuf==3.15.0
 
 ###additional
 pypandoc