diff --git a/AICSE-demo-student/demo/yolov3/yolov3-bcl/demo/docs/requirements.txt b/AICSE-demo-student/demo/yolov3/yolov3-bcl/demo/docs/requirements.txt
old mode 100755
new mode 100644
index 3221456..7cca3ed
--- a/AICSE-demo-student/demo/yolov3/yolov3-bcl/demo/docs/requirements.txt
+++ b/AICSE-demo-student/demo/yolov3/yolov3-bcl/demo/docs/requirements.txt
@@ -1,6 +1,6 @@
 numpy==1.15.1
 Pillow==5.3.0
 scipy==1.1.0
-tensorflow-gpu==1.11.0
+tensorflow-gpu==2.7.2
 wget==3.2
 seaborn==0.9.0