diff --git a/requirements.txt b/requirements.txt
index 81b779a..1ac3cc6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ Markdown==3.1.1
 numpy==1.16.2
 pandas==0.24.2
 Pillow==6.2.2
-protobuf==3.7.1
+protobuf==3.15.0
 python-dateutil==2.8.0
 pytz==2018.9
 scikit-learn==0.20.3