diff --git a/ml/udacity_nano_degree/machine-learning-projects/projects/practice_projects/cnn/requirements/requirements.txt b/ml/udacity_nano_degree/machine-learning-projects/projects/practice_projects/cnn/requirements/requirements.txt
old mode 100755
new mode 100644
index 84d7203..5c0fab4
--- a/ml/udacity_nano_degree/machine-learning-projects/projects/practice_projects/cnn/requirements/requirements.txt
+++ b/ml/udacity_nano_degree/machine-learning-projects/projects/practice_projects/cnn/requirements/requirements.txt
@@ -6,5 +6,5 @@ scipy==0.18.1
 tqdm==4.11.2
 keras==2.0.2
 scikit-learn==0.18.1
-pillow==4.0.0
+pillow==8.1.1
 tensorflow==1.0.0
\ No newline at end of file