diff --git a/requirements.txt b/requirements.txt
index 697e209..82290a4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -77,7 +77,7 @@ Pillow==6.2.0
 pkginfo==1.5.0.1
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.9.1
+protobuf==3.18.3
 psutil==5.6.3
 ptyprocess==0.6.0
 pycodestyle==2.5.0