diff --git a/requirements.txt b/requirements.txt
index 7c931632b..b468663dc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -14,7 +14,7 @@ Flask-Moment==1.0.2
 Flask-SQLAlchemy==2.5.1
 Flask-WTF==0.15.1
 greenlet==1.1.2
-gunicorn==20.1.0
+gunicorn==21.2.0
 idna==3.3
 importlib-metadata==4.8.2
 importlib-resources==5.4.0