diff --git a/requirements.txt b/requirements.txt
index f9d83e2..5b99eac 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ Keras-Applications==1.0.8
 Keras-Preprocessing==1.1.2
 Markdown==3.2.2
 numpy==1.18.4
-protobuf==3.12.2
+protobuf==3.18.3
 psycopg2-binary==2.8.5
 python-dateutil==2.8.1
 pytz==2020.1