diff --git a/requirements.txt b/requirements.txt
index 9c4aba2..7f7f517 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ pluggy==0.8.0
 ply==3.11
 prometheus-client==0.5.0
 prompt-toolkit==2.0.7
-protobuf==3.5.2
+protobuf==3.18.3
 ptyprocess==0.6.0
 py==1.7.0
 pyglet==1.3.2