diff --git a/requirements.txt b/requirements.txt
index 68ef296..b7f52e4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -32,7 +32,7 @@ Pygments==2.4.2
 pyparsing==2.4.1.1
 python-dateutil==2.8.0
 pytz==2019.1
-PyYAML==5.1.1
+PyYAML==5.4
 requests==2.22.0
 scikit-learn==0.21.2
 scipy==1.3.0