diff --git a/11.flask-blog/requirements.txt b/11.flask-blog/requirements.txt
old mode 100755
new mode 100644
index f15950a..94cf921
--- a/11.flask-blog/requirements.txt
+++ b/11.flask-blog/requirements.txt
@@ -11,7 +11,7 @@ Flask-SQLAlchemy==2.2
 pymysql==0.9.2
 Flask-WTF==0.14.2
 itsdangerous==0.24
-Jinja2==2.9.6
+Jinja2==2.11.3
 Mako==1.0.7
 MarkupSafe==1.0
 python-dateutil==2.6.1