diff --git a/requirements.txt b/requirements.txt
index 1aceb47..de8048a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Keras-Preprocessing==1.1.0
 kiwisolver==1.1.0
 Markdown==3.1.1
 matplotlib==3.1.1
-protobuf==3.9.1
+protobuf==3.18.3
 pyparsing==2.4.2
 python-dateutil==2.8.0
 six==1.12.0