diff --git a/requirements.txt b/requirements.txt
index 4923223..775de24 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -56,7 +56,7 @@ pyparsing==2.4.7
 pyrsistent==0.16.0
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.3.1
+PyYAML==5.4
 pyzmq==18.1.1
 qtconsole==4.7.3
 QtPy==1.9.0