diff --git a/requirements.txt b/requirements.txt
index b6dcff0..7b18376 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -7,7 +7,7 @@ python-dateutil==2.5.3
 python-engineio==0.9.2
 python-mimeparse==1.5.2
 python-socketio==1.4.4
-PyYAML==3.11
+PyYAML==5.1
 requests==2.11.0
 Werkzeug==0.11.10
 httplib2==0.9.2