diff --git a/requirements.txt b/requirements.txt
index a440c8ab..748bed5f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -44,7 +44,7 @@ pyparsing==2.3.1
 pytest-sugar==0.9.2
 python-dateutil==2.8.0
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.4
 requests==2.21.0
 scikit-learn==0.20.3
 scipy==1.2.1