diff --git a/requirements.txt b/requirements.txt
index ee7cd30..6ad0a38 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -66,7 +66,7 @@ parso==0.6.2
 pickleshare==0.7.5
 prometheus-client==0.7.1
 prompt-toolkit==3.0.4
-protobuf==3.11.3
+protobuf==3.15.0
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 pycparser==2.20