diff --git a/requirements.txt b/requirements.txt
index 8dbbeb4..2bcc8a3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -69,7 +69,7 @@ plotly==4.1.1
 poyo==0.5.0
 prometheus-client==0.7.1
 prompt-toolkit==2.0.10
-protobuf==3.6.1
+protobuf==3.15.0
 ptyprocess==0.6.0
 pyglet==1.3.2
 Pygments==2.4.2