diff --git a/cs231n/assignment1/requirements.txt b/cs231n/assignment1/requirements.txt
old mode 100755
new mode 100644
index c34c7b6..ede0ccf
--- a/cs231n/assignment1/requirements.txt
+++ b/cs231n/assignment1/requirements.txt
@@ -1,7 +1,7 @@
 Cython==0.23.4
 Jinja2==2.10.1
 MarkupSafe==0.23
-Pillow==3.3.2
+Pillow==9.0.0
 Pygments==2.0.2
 appnope==0.1.0
 argparse==1.2.1