diff --git a/requirements.txt b/requirements.txt
index 2be3cd5..fc68780 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -89,7 +89,7 @@ pytest-cov==2.8.1
 python-dateutil==2.8.1
 pytz==2019.3
 pytzdata==2019.3
-PyYAML==5.3
+PyYAML==5.4
 pyzmq==19.0.0
 qtconsole==4.7.1
 QtPy==1.9.0