upgrading the django version on bitnami hosting

Hello,

When i create a bitnami server, it comes configured with django 1.3.4.

My application requires version 1.4

So, i did a sudo pip install of django, but my application is still using the 1.3.4 version. Where all do i have to change to make my app using the latest version. I have made the changes in apps/django/django.conf to reflect the directory path of the upgraded django version already.