diff --git a/requirements.txt b/requirements.txt
index 78e34e5..be97aa3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -37,6 +37,6 @@ Twisted==18.4.0
 txaio==2.10.0
 urllib3==1.22
 watson-developer-cloud==1.3.4
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 wikipedia==1.4.0
 zope.interface==4.5.0