diff --git a/requirements.txt b/requirements.txt
index c3bb005..52c5bb7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@
 # Libraries worden automatisch bij deployment geinstalleerd
 # De opgeven versie is optioneel
 Flask==1.0.2
-Jinja2==2.10.1
+Jinja2==2.11.3
 Werkzeug==0.15.2
 mysql-connector==2.2.9
 mysql-connector-python==8.0.11