diff --git a/requirements.txt b/requirements.txt
index b5cd959..9b91245 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ Pillow==7.0.0
 prometheus-client==0.7.1
 promise==2.3
 prompt-toolkit==3.0.5
-protobuf==3.11.3
+protobuf==3.18.3
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8