diff --git a/requirements.txt b/requirements.txt
index 2b5340c..517664b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -107,7 +107,7 @@ Pillow==8.3.2
 pluggy==0.6.0
 prometheus-client==0.7.1
 prompt-toolkit==3.0.5
-protobuf==3.11.3
+protobuf==3.15.0
 psutil==5.6.6
 ptyprocess==0.6.0
 py==1.10.0