diff --git a/requirements.txt b/requirements.txt
index d9509d2..e339be9 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -25,6 +25,6 @@ requests==2.9.1
 six==1.10.0
 tornado==4.2
 urllib3==1.15.1
-Werkzeug==0.11.9
+Werkzeug==0.15.3
 wheel==0.24.0
 WTForms==2.1