diff --git a/requirements.txt b/requirements.txt
index bc09bc1..251f5c2 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -46,7 +46,7 @@ Pillow==5.3.0
 poyo==0.4.2
 prometheus-client==0.5.0
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.18.3
 ptyprocess==0.6.0
 Pygments==2.3.1
 PyJWT==1.7.1