diff --git a/requirements.txt b/requirements.txt
index 6225a53..a9915c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -48,7 +48,7 @@ troposphere==1.9.4
 twilio==6.4.1
 Unidecode==0.4.20
 urllib3==1.21.1
-Werkzeug==0.12
+Werkzeug==0.15.3
 whitenoise==3.3.0
 wsgi-request-logger==0.4.6
 zappa==0.42.1