diff --git a/requirements.txt b/requirements.txt
index 5be7d98..44e613d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,7 +25,7 @@ ptyprocess==0.6.0
 Pygments==2.4.2
 python-dateutil==2.8.1
 pytz==2019.3
-PyYAML==5.1.2
+PyYAML==5.4
 schedule==0.6.0
 six==1.13.0
 tempora==1.14.1