diff --git a/LITReview/LITReview/settings.py b/LITReview/LITReview/settings.py
index e8c5916..514b2d8 100644
--- a/LITReview/LITReview/settings.py
+++ b/LITReview/LITReview/settings.py
@@ -37,6 +37,8 @@ INSTALLED_APPS = [
     'django.contrib.sessions',
     'django.contrib.messages',
     'django.contrib.staticfiles',
+    'authentication', 
+    'reviews',
 ]
 
 MIDDLEWARE = [
@@ -102,7 +104,7 @@ AUTH_PASSWORD_VALIDATORS = [
 # Internationalization
 # https://docs.djangoproject.com/en/5.2/topics/i18n/
 
-LANGUAGE_CODE = 'en-us'
+LANGUAGE_CODE = 'fr-fr'
 
 TIME_ZONE = 'UTC'
 
@@ -120,3 +122,7 @@ STATIC_URL = 'static/'
 # https://docs.djangoproject.com/en/5.2/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+AUTH_USER_MODEL = 'authentication.User'
+
+
diff --git a/LITReview/authentication/models.py b/LITReview/authentication/models.py
index 71a8362..3ccfc56 100644
--- a/LITReview/authentication/models.py
+++ b/LITReview/authentication/models.py
@@ -1,3 +1,7 @@
 from django.db import models
+from django.contrib.auth.models import AbstractUser
+
+
+class User(AbstractUser):
+    account_id = models.CharField(max_length=10, unique=True)
 
-# Create your models here.