diff --git a/tests/apps/multi/requirements.txt b/tests/apps/multi/requirements.txt
index 654a2b7b0..fb50f48c3 100644
--- a/tests/apps/multi/requirements.txt
+++ b/tests/apps/multi/requirements.txt
@@ -1,2 +1,2 @@
 Flask==2.3.2
-gunicorn==20.1.0
+gunicorn==21.1.0