diff --git a/requirements.txt b/requirements.txt
index 7d973fe..4ac0d0e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -60,7 +60,7 @@ python-dateutil==2.8.0
 python-hostlist==1.18
 python-swiftclient==3.6.0
 pytz==2018.9
-PyYAML==3.13
+PyYAML==5.4
 pyzmq==18.0.0
 qtconsole==4.4.3
 requests==2.21.0