diff --git a/requirements.txt b/requirements.txt
index 76aae7b..91241cf 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -39,5 +39,5 @@ twilio==6.4.2
 Twisted==17.5.0
 urllib3==1.21.1
 w3lib==1.17.0
-Werkzeug==0.12.2
+Werkzeug==0.15.3
 zope.interface==4.4.2