diff --git a/requirements.txt b/requirements.txt
index 301dbfa..da5884a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -68,7 +68,7 @@ pluggy==0.9.0
 preshed==2.0.1
 prometheus-client==0.4.2
 prompt-toolkit==2.0.7
-protobuf==3.6.1
+protobuf==3.15.0
 py==1.8.0
 pyasn1==0.4.5
 pyasn1-modules==0.2.3