diff --git a/requirements.txt b/requirements.txt
index ccd2392cf..83a66d387 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -98,7 +98,7 @@ python-dateutil==2.7.3
 python-mimeparse==1.6.0
 pytz==2018.4
 pywebpush==1.7.0
-PyYAML==3.13
+PyYAML==5.1
 requests>=2.20.0
 requests-oauthlib==1.0.0
 requests-toolbelt==0.8.0