diff --git a/requirements.txt b/requirements.txt
index d4b9e77..3541086 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@ Keras-Preprocessing==1.1.0
 Markdown==3.1.1
 nltk==3.4.5
 numpy==1.16.5
-protobuf==3.10.0
+protobuf==3.18.3
 python-dateutil==2.8.0
 PyYAML==5.1.2
 requests==2.22.0