diff --git a/docker/animal/first-attempt/app1/requirements.txt b/docker/animal/first-attempt/app1/requirements.txt
index 2e230ee..d2b4196 100644
--- a/docker/animal/first-attempt/app1/requirements.txt
+++ b/docker/animal/first-attempt/app1/requirements.txt
@@ -1,5 +1,5 @@
 click==7.1.1
-Flask==1.1.2
+Flask==3.1.3
 itsdangerous==1.1.0
 Jinja2==2.11.3
 MarkupSafe==1.1.1