diff --git a/requirements.txt b/requirements.txt
index 97d4441..e3a8a92 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -6,4 +6,4 @@ Jinja2==2.8
 MarkupSafe==0.23
 python3-saml==1.2.6
 xmlsec==1.3.3
-Werkzeug==0.11.10
+Werkzeug==0.15.3