diff --git a/ubuntu-16-04-vnc-desktop/image/usr/lib/web/requirements.txt b/ubuntu-16-04-vnc-desktop/image/usr/lib/web/requirements.txt
index ec23674b..574a0f16 100644
--- a/ubuntu-16-04-vnc-desktop/image/usr/lib/web/requirements.txt
+++ b/ubuntu-16-04-vnc-desktop/image/usr/lib/web/requirements.txt
@@ -1,4 +1,4 @@
-Flask==0.10.1
+Flask==1.0
 Flask-Login==0.2.11
 Jinja2==2.7.3
 MarkupSafe==0.23