diff --git a/appendix/production/inference/flask-api/requirements.txt b/appendix/production/inference/flask-api/requirements.txt
old mode 100755
new mode 100644
index f6e71de..f53549d
--- a/appendix/production/inference/flask-api/requirements.txt
+++ b/appendix/production/inference/flask-api/requirements.txt
@@ -1,3 +1,3 @@
 torchvision==0.6.0+cu101
-Flask==1.1.2
+Flask==2.3.2
 Pillow==7.1.2