diff --git a/flask-app/requirements.txt b/flask-app/requirements.txt
old mode 100755
new mode 100644
index 47b687c..d89e8f5
--- a/flask-app/requirements.txt
+++ b/flask-app/requirements.txt
@@ -1,7 +1,7 @@
 elasticsearch==6.3.0
 Flask==0.10.1
 itsdangerous==0.24
-Jinja2==2.8
+Jinja2==2.11.3
 MarkupSafe==0.23
 requests==2.8.1
 urllib3==1.23