diff --git a/requirements.txt b/requirements.txt
index 9e24630469..218a8426a0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -9,7 +9,7 @@ flask-sslify==0.1.5
 passlib==1.6.2
 Jinja2==2.8
 MarkupSafe==0.23
-Werkzeug==0.11.3
+Werkzeug==0.15.5
 aniso8601==1.1.0
 blinker==1.3
 itsdangerous==0.24