diff --git a/challenges/doublehopper/docker/app/requirements.txt b/challenges/doublehopper/docker/app/requirements.txt
index 8eb2988..a1c9b0c 100644
--- a/challenges/doublehopper/docker/app/requirements.txt
+++ b/challenges/doublehopper/docker/app/requirements.txt
@@ -1,4 +1,4 @@
-Flask==3.0.1
+Flask==3.1.3
 Flask-Cors==4.0.0
 gunicorn==21.2.0
 gevent==23.9.1
\ No newline at end of file