diff --git a/requirements.txt b/requirements.txt
index 8146dfb..8a8ff5e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -51,5 +51,5 @@ typed-ast==1.1.1
 virtualenv==16.1.0
 virtualenv-clone==0.4.0
 virtualenvwrapper==4.8.2
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wrapt==1.10.11