diff --git a/requirements.txt b/requirements.txt
index b7fdc6d..541b92d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -50,7 +50,7 @@ Pillow==3.1.2
 plotly==3.1.0
 prometheus-client==0.3.0
 prompt-toolkit==1.0.15
-protobuf==3.6.0
+protobuf==3.18.3
 ptyprocess==0.6.0
 pycrypt==0.7.2
 pycups==1.9.73