diff --git a/Machine-Learning/tensorflow-chatbot/ui/requirements.txt b/Machine-Learning/tensorflow-chatbot/ui/requirements.txt
index 4d3e216..11f94c6 100644
--- a/Machine-Learning/tensorflow-chatbot/ui/requirements.txt
+++ b/Machine-Learning/tensorflow-chatbot/ui/requirements.txt
@@ -3,4 +3,4 @@ Flask==0.11.1
 itsdangerous==0.24
 Jinja2==2.8
 MarkupSafe==0.23
-Werkzeug==0.11.10
+Werkzeug==0.15.3