diff --git a/requirements.txt b/requirements.txt
index b9ce84d..1349a46 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -69,7 +69,7 @@ pickleshare==0.7.5
 pluggy==0.8.1
 prometheus-client==0.6.0
 prompt-toolkit==1.0.16
-protobuf==3.6.1
+protobuf==3.15.0
 ptyprocess==0.6.0
 py==1.7.0
 pygame==1.9.4