diff --git a/requirements.txt b/requirements.txt
index be93528..26bd53c 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -12,6 +12,6 @@ MarkupSafe==1.1.1
 pyasn1==0.4.3
 requests==2.19.1
 urllib3==1.23
-Werkzeug==0.14.1
+Werkzeug==0.15.3
 zope.event==4.5.0
 zope.interface==5.4.0