diff --git a/backend/requirements.txt b/backend/requirements.txt
index 7a081d5..bdfdcce 100644
--- a/backend/requirements.txt
+++ b/backend/requirements.txt
@@ -9,7 +9,7 @@ setproctitle>=1.2.2,<1.4.0
 SQLAlchemy>=1.4.27,<2.1.0
 
 # production runner
-gunicorn>=20.1.0,<20.2.0
+gunicorn>=20.1.0,<21.3.0
 
 # profiling and checking
 newrelic>=7.2.2,<8.8.0