diff --git a/requirements.txt b/requirements.txt
index 181c82c..c0defcd 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Markdown==3.1.1
 mock==3.0.5
 numpy==1.16.5
 pandas==0.24.2
-protobuf==3.10.0
+protobuf==3.18.3
 python-dateutil==2.8.0
 pytz==2019.3
 PyYAML==5.1.2