diff --git a/requirements.txt b/requirements.txt
index de7ae96..5f8181e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,7 +21,7 @@ flup==1.0.3
 geobuf==1.1.1
 geojson==3.0.1
 greenlet==2.0.2
-gunicorn==20.1.0
+gunicorn==21.2.0
 idna==3.4
 importlib-metadata==6.0.0
 importlib-resources==5.12.0