diff --git a/requirements.txt b/requirements.txt
index d3f4916..eba268c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -49,7 +49,7 @@ pexpect==4.8.0
 pickleshare==0.7.5
 Pillow==7.1.2
 prompt-toolkit==3.0.5
-protobuf==3.13.0
+protobuf==3.18.3
 psutil==5.7.0
 ptyprocess==0.6.0
 pyasn1==0.4.8