diff --git a/Django_Blog/13-Deployment-Heroku/django_project/requirements.txt b/Django_Blog/13-Deployment-Heroku/django_project/requirements.txt
index a1760bfa2..b74cba813 100644
--- a/Django_Blog/13-Deployment-Heroku/django_project/requirements.txt
+++ b/Django_Blog/13-Deployment-Heroku/django_project/requirements.txt
@@ -8,7 +8,7 @@ django-crispy-forms==1.7.2
 django-heroku==0.3.1
 django-storages==1.7.1
 docutils==0.14
-gunicorn==19.9.0
+gunicorn==23.0.0
 idna==2.7
 jmespath==0.9.3
 Pillow==5.2.0