diff --git a/requirements.txt b/requirements.txt
index b5ee15c..6a14f8c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ pexpect==4.2.1
 pickleshare==0.7.4
 prettytable==0.7.2
 prompt-toolkit==1.0.15
-protobuf==3.4.0
+protobuf==3.18.3
 ptyprocess==0.5.2
 pybloomfiltermmap==0.3.12
 pycurl==7.43.0