diff --git a/requirements.txt b/requirements.txt
index 908d00c..afac5e5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -34,7 +34,7 @@ protobuf==3.5.2.post1
 pyparsing==2.2.0
 python-dateutil==2.7.2
 pytz==2018.4
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 scikit-learn==0.19.1
 scipy==1.0.1