diff --git a/requirements.txt b/requirements.txt
index 7499c6a..26d9902 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -16,7 +16,7 @@ sendgrid==1.4.2
 simplejson==3.6.3
 smtpapi==0.2.0
 tweepy==2.3.0
-Werkzeug==0.9.6
+Werkzeug==0.15.3
 wheel==0.24.0
 WTForms==2.0.2
 zope.interface==4.1.1