diff --git a/requirements.txt b/requirements.txt
index 9bd9498d..ec5e056f 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ hiredis==0.1.1
 redis==2.9.0
 mock==1.0.1
 Werkzeug==0.9.1
-PyYAML==3.10
+PyYAML==5.4
 Flask==0.10
 Flask-SeaSurf==0.1.13
 Flask-Assets==0.8