diff --git a/requirements.txt b/requirements.txt
index 5f4b7d5..4ea7f80 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -10,7 +10,7 @@ flask-restful
 Flask==0.12
 flask_wtf
 flask_mongoengine
-Werkzeug==0.11.15
+Werkzeug==0.15.5
 click>=5.0