diff --git a/Machine-Learning/tensorflow-chatbot/ui/requirements.txt b/Machine-Learning/tensorflow-chatbot/ui/requirements.txt
index 4d3e216..0671384 100644
--- a/Machine-Learning/tensorflow-chatbot/ui/requirements.txt
+++ b/Machine-Learning/tensorflow-chatbot/ui/requirements.txt
@@ -1,5 +1,5 @@
 click==6.6
-Flask==0.11.1
+Flask==1.0
 itsdangerous==0.24
 Jinja2==2.8
 MarkupSafe==0.23