diff --git a/requirements.txt b/requirements.txt
index a9f21e6..2b86d45 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,7 +51,7 @@ pexpect==4.8.0
 pickleshare==0.7.5
 Pillow==6.2.2
 portalocker==1.5.2
-protobuf==3.13.0
+protobuf==3.18.3
 psutil==5.7.2
 ptyprocess==0.6.0
 pyasn1==0.4.8