diff --git a/cs231n_2019/assignment1/requirements.txt b/cs231n_2019/assignment1/requirements.txt
old mode 100755
new mode 100644
index c7dcda6..2de0604
--- a/cs231n_2019/assignment1/requirements.txt
+++ b/cs231n_2019/assignment1/requirements.txt
@@ -17,7 +17,7 @@ ipython==7.4.0
 ipython-genutils==0.2.0
 ipywidgets==7.4.2
 jedi==0.13.3
-Jinja2==2.10.1
+Jinja2==2.11.3
 jsonschema==3.0.1
 jupyter==1.0.0
 jupyter-client==5.2.4