diff --git a/requirements.txt b/requirements.txt
index a866cb0..ca745fe 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,7 +36,7 @@ pyparsing==2.3.1
 pysmbc==1.0.15.4
 python-dateutil==2.8.0
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.1
 requests==2.7.0
 scikit-learn==0.20.3
 scipy==1.2.1