diff --git a/requirements.txt b/requirements.txt
index 56502e4..5b86dd1 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ Pillow==6.0.0
 pyparsing==2.4.0
 python-dateutil==2.8.0
 pytz==2018.9
-PyYAML==5.1
+PyYAML==5.4
 requests==2.21.0
 six==1.12.0
 tornado==6.0.2