diff --git a/appengine/flexible/cloudsql/requirements.txt b/appengine/flexible/cloudsql/requirements.txt
index 3a6d8955afa..127de882a7d 100644
--- a/appengine/flexible/cloudsql/requirements.txt
+++ b/appengine/flexible/cloudsql/requirements.txt
@@ -1,4 +1,4 @@
 Flask==1.1.1
 Flask-SQLAlchemy==2.4.1
-gunicorn==20.0.4
+gunicorn==22.0.0
 PyMySQL==0.9.3