diff --git a/heartform/requirements.txt b/heartform/requirements.txt
index 87218c8..a76132a 100644
--- a/heartform/requirements.txt
+++ b/heartform/requirements.txt
@@ -71,7 +71,7 @@ python-dateutil==2.6.1
 python-debian==0.1.32
 pytz==2019.3
 pyxdg==0.25
-PyYAML==3.12
+PyYAML==5.4
 reportlab==3.4.0
 requests==2.18.4
 requests-unixsocket==0.1.5