diff --git a/requirements.txt b/requirements.txt
index d3d5f52..068c650 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,7 +24,7 @@ psutil==5.6.7
 pyrsistent==0.15.6
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.2
+PyYAML==5.4
 requests==2.22.0
 six==1.13.0
 sortedcontainers==2.1.0