diff --git a/apps/puppies/cats/requirements.txt b/apps/puppies/cats/requirements.txt
index b9e8e4e..5983dfb 100644
--- a/apps/puppies/cats/requirements.txt
+++ b/apps/puppies/cats/requirements.txt
@@ -1,7 +1,7 @@
 backports-abc==0.4
 certifi==2016.9.26
 click==6.6
-Flask==0.11.1
+Flask==1.0
 itsdangerous==0.24
 Jinja2==2.8
 MarkupSafe==0.23