I have a Django project with about 10 apps in it. But the admin interface only shows Auth and Site models which are part of Django distribution. Yes, the admin interface is up and working but none of my self-written apps shows there.

INSTALLED_APPS

INSTALLED_APPS = (
    'django.contrib.auth',
    'django.contrib.sites',
    'django.contrib.contenttypes',
    'django.contrib.humanize',
    'django.contrib.sessions',
    'django.contrib.admin',
    'django.contrib.admindocs',
    'project.app1',
    ...

app1/admin.py

from django.contrib import admin
from project.app1.models import *

admin.site.register(model1)
admin.site.register(model2)
admin.site.register(model3)

What could be wrong in this case? Looks like everything is configured as what document says.

Thank you in advance.