diff --git a/lecture6/classifier/requirements.txt b/lecture6/classifier/requirements.txt
index b4fe001..cd3744e 100644
--- a/lecture6/classifier/requirements.txt
+++ b/lecture6/classifier/requirements.txt
@@ -1,5 +1,5 @@
 Flask==1.1.2
-Jinja2==2.11.2
+Jinja2==2.11.3
 Werkzeug==1.0.1
 gunicorn==20.0.4
 numpy==1.18.1