diff --git a/web_application/heroku_deployment/requirements.txt b/web_application/heroku_deployment/requirements.txt
index 100463a..645b171 100644
--- a/web_application/heroku_deployment/requirements.txt
+++ b/web_application/heroku_deployment/requirements.txt
@@ -1,7 +1,7 @@
 appnope==0.1.0
 click==6.7
 decorator==4.1.2
-Flask==0.12.2
+Flask==1.0
 Flask-SQLAlchemy==2.3.2
 ipython==6.2.1
 ipython-genutils==0.2.0