diff --git a/requirements.txt b/requirements.txt
index fd16db6..68f449d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -132,7 +132,7 @@ pluggy==0.8.0
 ply==3.11
 prometheus-client==0.4.2
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.15.0
 psutil==5.4.8
 ptyprocess==0.6.0
 py==1.7.0