diff --git a/apps/high_cpu/requirements.txt b/apps/high_cpu/requirements.txt
index 27257ac..5fb1046 100644
--- a/apps/high_cpu/requirements.txt
+++ b/apps/high_cpu/requirements.txt
@@ -2,7 +2,7 @@ typing==3.10.0.0
 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