diff --git a/2018-pykonik-40-python-systemd/requirements.txt b/2018-pykonik-40-python-systemd/requirements.txt
index 8216535..6a8b9e9 100644
--- a/2018-pykonik-40-python-systemd/requirements.txt
+++ b/2018-pykonik-40-python-systemd/requirements.txt
@@ -10,7 +10,7 @@ ipython==7.1.1
 ipython-genutils==0.2.0
 ipywidgets==7.4.2
 jedi==0.13.1
-Jinja2==2.10
+Jinja2==2.11.3
 jsonschema==2.6.0
 jupyter==1.0.0
 jupyter-client==5.2.3