diff --git a/requirements.txt b/requirements.txt
index 166ffe14..c560c08e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -115,6 +115,6 @@ urllib3==1.23
 virtualenv==15.1.0
 web3==4.5.0
 websockets==5.0.1
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wrapt==1.10.11
 zope.interface==4.5.0