diff --git a/requirements.txt b/requirements.txt
index dc53c2a..88b48b4 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -5,4 +5,4 @@ Jinja2==2.9.6
 MarkupSafe==1.0
 python-http-client==3.0.0
 sendgrid==5.3.0
-Werkzeug==0.12.2
+Werkzeug==0.15.3