diff --git a/requirements.txt b/requirements.txt
index da341ff..4f8847b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ pickleshare==0.7.5
 pluggy==0.12.0
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.9.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 py==1.8.0
 pycodestyle==2.5.0