diff --git a/requirements.txt b/requirements.txt
index cd1a3ac..5d38ce1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -97,7 +97,7 @@ plotly==4.5.4
 portend==2.6
 prometheus-client==0.7.1
 prompt-toolkit==3.0.4
-protobuf==3.11.3
+protobuf==3.15.0
 ptyprocess==0.6.0
 py-readability-metrics==1.4.4
 pycparser==2.20