diff --git a/requirements.txt b/requirements.txt
index 14784ed..ddba4a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ plotly==2.5.1
 pyparsing==2.3.1
 python-dateutil==2.8.0
 pytz==2018.4
-PyYAML==3.13
+PyYAML==5.4
 requests==2.18.4
 six==1.11.0
 traitlets==4.3.2