diff --git a/requirements.txt b/requirements.txt
index 2de594f..401a795 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -52,7 +52,7 @@ pickleshare==0.7.5
 Pillow==7.1.1
 prometheus-client==0.7.1
 prompt-toolkit==3.0.5
-protobuf==3.11.3
+protobuf==3.15.0
 ptyprocess==0.6.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8