diff --git a/requirements.txt b/requirements.txt
index 6b466a5..8684fa5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,5 +13,5 @@ pytz==2017.3
 requests==2.18.4
 requests-oauthlib==0.8.0
 urllib3==1.22
-Werkzeug==0.13
+Werkzeug==0.15.3
 zope.interface==4.4.3