diff --git a/requirements.txt b/requirements.txt
index c0fd206..eed7291 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -77,7 +77,7 @@ pipupgrade==1.5.0
 plotly==3.10.0
 pluggy==0.9.0
 ply==3.11
-protobuf==3.6.1
+protobuf==3.15.0
 py==1.8.0
 pyasn1==0.4.4
 pyasn1-modules==0.2.2