diff --git a/example/requirements.txt b/example/requirements.txt
index 00cce6a..1240f52 100644
--- a/example/requirements.txt
+++ b/example/requirements.txt
@@ -1,6 +1,6 @@
 click==6.6
 fbmessenger==3.1.0
-Flask==0.11.1
+Flask==1.0
 itsdangerous==0.24
 Jinja2==2.8
 MarkupSafe==0.23