diff --git a/requirements.txt b/requirements.txt
index bbf2d5f..0d35062 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,7 +5,7 @@ Jinja2==2.7.3
 logging==0.4.9.6
 logstash_formatter==0.5.8
 MarkupSafe==0.23
-PyYAML==3.11
+PyYAML==5.4
 requests==2.4.1
 Werkzeug==0.9.6
 wsgiref==0.1.2