diff --git a/requirements.txt b/requirements.txt
index e13bf97..f545e50 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ parso==0.7.0
 pickleshare==0.7.5
 prometheus-client==0.8.0
 prompt-toolkit==3.0.5
-protobuf==3.12.2
+protobuf==3.18.3
 pydot==1.4.1
 Pygments==2.6.1
 pylint==2.5.3