diff --git a/requirements.txt b/requirements.txt
index 1ba0a44..ebcd4da 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -135,7 +135,7 @@ pluggy==0.13.0
 ply==3.11
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.11.3
+protobuf==3.15.0
 psutil==5.6.3
 py==1.8.0
 pyasn1==0.4.8