diff --git a/VRP_algorithm/recycle/savings-algorithm-master/requirements.txt b/VRP_algorithm/recycle/savings-algorithm-master/requirements.txt
index 62ff112..acf5ae5 100644
--- a/VRP_algorithm/recycle/savings-algorithm-master/requirements.txt
+++ b/VRP_algorithm/recycle/savings-algorithm-master/requirements.txt
@@ -40,7 +40,7 @@ ipython==5.5.0
 ipython-genutils==0.2.0
 isort==4.3.4
 jedi==0.11.1
-Jinja2==2.10
+Jinja2==2.11.3
 jsonschema==2.6.0
 jupyter-client==5.2.2
 jupyter-core==4.4.0