diff --git a/requirements.txt b/requirements.txt
index 983ac80..e0b501e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,7 +2,7 @@ celery-types>=0.20.0
 connexion>=2.11.2,<3
 foca>=0.12.1
 geopy>=2.2.0
-gunicorn>=20.1.0,<21
+gunicorn>=22
 ip2geotools>=0.1.6
 py-tes>=0.4.2
 pytest-ordering>=0.6