diff --git a/requirements.txt b/requirements.txt
index 7e099ab..a5b2a4a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ protobuf==3.5.1
 psycopg2==2.7.4
 python-dateutil==2.6.1
 pytz==2018.3
-PyYAML==3.12
+PyYAML==5.4
 requests==2.18.4
 s3transfer==0.1.13
 scikit-learn==0.19.1