diff --git a/07_celery/przyklady/web_app/requirements.txt b/07_celery/przyklady/web_app/requirements.txt
index 09833df..ce09946 100644
--- a/07_celery/przyklady/web_app/requirements.txt
+++ b/07_celery/przyklady/web_app/requirements.txt
@@ -9,7 +9,7 @@ Flask==0.12.2
 gunicorn==19.7.1
 idna==2.6
 itsdangerous==0.24
-Jinja2==2.10
+Jinja2==2.11.3
 kombu==4.1.0
 MarkupSafe==1.0
 pytz==2018.4