diff --git a/requirements.txt b/requirements.txt
index ea89818..7411860 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -76,5 +76,5 @@ ufw==0.35
 unattended-upgrades==0.1
 urllib3==1.17
 watson-developer-cloud==0.19.0
-Werkzeug==0.11.10
+Werkzeug==0.15.3
 WTForms==2.1