diff --git a/requirements.txt b/requirements.txt
index 4e26d49..8268f12 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -129,7 +129,7 @@ pluggy==0.9.0
 ply==3.11
 prometheus-client==0.6.0
 prompt-toolkit==2.0.9
-protobuf==3.11.2
+protobuf==3.15.0
 psutil==5.6.1
 ptyprocess==0.6.0
 py==1.8.0