diff --git a/README.md b/README.md
index d5c0ff6..ea29b14 100644
--- a/README.md
+++ b/README.md
@@ -217,11 +217,10 @@ Here's an example `BaseModel`:
 
 ```python
 from django.db import models
-from django.utils import timezone
 
 
 class BaseModel(models.Model):
-    created_at = models.DateTimeField(db_index=True, default=timezone.now)
+    created_at = models.DateTimeField(db_index=True, auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
 
     class Meta: