diff --git a/resources/CourseraDataPipelinesWithTensorFlowDataServices/C2/W4/ungraded_labs/transfer_learning/requirements.txt b/resources/CourseraDataPipelinesWithTensorFlowDataServices/C2/W4/ungraded_labs/transfer_learning/requirements.txt
old mode 100755
new mode 100644
index 151c0382..d7f63092
--- a/resources/CourseraDataPipelinesWithTensorFlowDataServices/C2/W4/ungraded_labs/transfer_learning/requirements.txt
+++ b/resources/CourseraDataPipelinesWithTensorFlowDataServices/C2/W4/ungraded_labs/transfer_learning/requirements.txt
@@ -1,2 +1,2 @@
 numpy==1.16.4
-Pillow==6.1.0
+Pillow==9.0.0