diff --git a/requirements.txt b/requirements.txt
index 21bb889..e290dc3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -72,7 +72,7 @@ pexpect==4.6.0
 pickleshare==0.7.5
 prometheus-client==0.4.1
 prompt-toolkit==2.0.5
-protobuf==3.6.1
+protobuf==3.18.3
 psycopg2==2.7.5
 psycopg2-binary==2.7.5
 ptyprocess==0.6.0