diff --git a/requirements.txt b/requirements.txt
index 89b220e..8ddc0d4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -53,7 +53,7 @@ pandas==0.23.4
 Pillow==5.3.0
 plotly==1.9.6
 pluggy==0.8.0
-protobuf==3.6.1
+protobuf==3.18.3
 py==1.7.0
 pyasn1==0.4.4
 pyasn1-modules==0.2.2