diff --git a/tests/apps/multi/requirements.txt b/tests/apps/multi/requirements.txt
index a75f74bfccd..b690bf61e0a 100644
--- a/tests/apps/multi/requirements.txt
+++ b/tests/apps/multi/requirements.txt
@@ -1,2 +1,2 @@
-Flask==2.0.3
+Flask==2.1.1
 gunicorn==20.1.0