diff --git a/requirements.txt b/requirements.txt
index 02cacc5..8776d2b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,7 +33,7 @@ psutil==5.6.6
 pyparsing==2.4.0
 python-dateutil==2.8.0
 pytz==2019.1
-PyYAML==5.1.1
+PyYAML==5.4
 redis==3.2.1
 scikit-learn==0.21.2
 scipy==1.3.0