diff --git a/11.flask-blog/requirements.txt b/11.flask-blog/requirements.txt
old mode 100755
new mode 100644
index f15950a..bb74828
--- a/11.flask-blog/requirements.txt
+++ b/11.flask-blog/requirements.txt
@@ -2,7 +2,7 @@ alembic==0.9.3
 blinker==1.4
 click==6.7
 dominate==2.3.1
-Flask==0.12.2
+Flask==1.0
 Flask-Bootstrap4==4.0.2
 Flask-Mail==0.9.1
 Flask-Migrate==2.0.4