diff --git a/requirements/heroku.txt b/requirements/heroku.txt
index 40a885c..b1acc6c 100644
--- a/requirements/heroku.txt
+++ b/requirements/heroku.txt
@@ -7,7 +7,7 @@ click==6.7
 coverage==4.4.1
 dominate==2.3.1
 Faker==1.0.2
-Flask==0.12.2
+Flask==1.0
 Flask-Bootstrap==3.3.7.1
 Flask-HTTPAuth==3.2.4
 Flask-Login==0.4.0