diff --git a/requirements.txt b/requirements.txt
index 16dbb67..f3b1d80 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -61,7 +61,7 @@ pytest-xdist==1.30.0
 python-dateutil==2.8.1
 python-hostlist==1.18
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 redis==3.3.11
 regex==2019.11.1
 requests==2.22.0