diff --git a/requirements.txt b/requirements.txt
index 262bbf3..3aea00e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -139,7 +139,7 @@ pluggy==0.12.0
 ply==3.11
 prometheus-client==0.7.1
 prompt-toolkit==2.0.9
-protobuf==3.9.1
+protobuf==3.18.3
 psutil==5.6.6
 ptyprocess==0.6.0
 py==1.8.0