diff --git a/requirements.txt b/requirements.txt
index dedf308..cc174f3 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -13,4 +13,4 @@ pytz==2017.3
 requests==2.18.4
 six==1.11.0
 urllib3==1.22
-Werkzeug==0.13
+Werkzeug==0.15.3