diff --git a/requirements.txt b/requirements.txt
index 16f2b26..e0010fb 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -62,7 +62,7 @@ pexpect==4.6.0
 pickleshare==0.7.5
 prometheus-client==0.5.0
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.18.3
 psutil==5.4.8
 ptyprocess==0.6.0
 py4j==0.10.7