diff --git a/requirements.txt b/requirements.txt
index 65b873c..aaca44c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,7 +13,7 @@ Markdown==3.2.1
 matplotlib==3.1.3
 numpy==1.18.1
 pandas==1.0.1
-protobuf==3.11.3
+protobuf==3.15.0
 pyparsing==2.4.6
 python-dateutil==2.8.1
 pytz==2019.3