diff --git a/python3/16_Web_Services/f_web_application/d_using_flask/f_Authentication/requirements.txt b/python3/16_Web_Services/f_web_application/d_using_flask/f_Authentication/requirements.txt
index a8f91090..fcee4a2d 100644
--- a/python3/16_Web_Services/f_web_application/d_using_flask/f_Authentication/requirements.txt
+++ b/python3/16_Web_Services/f_web_application/d_using_flask/f_Authentication/requirements.txt
@@ -1,4 +1,4 @@
-flask==2.2.5
+flask==3.1.3
 pyjwt[crypto]==2.4.0
 requests==2.33.0
 requests-oauthlib==1.3.0