diff --git a/requirements.txt b/requirements.txt
index 9e1cf1c..719e102 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -70,7 +70,7 @@ pickleshare==0.7.5
 pluggy==0.13.1
 prometheus-client==0.7.1
 prompt-toolkit==3.0.3
-protobuf==3.11.3
+protobuf==3.15.0
 psutil==5.7.0
 ptyprocess==0.6.0
 py==1.8.1