diff --git a/billing/tasks.py b/billing/tasks.py
index e1f89da..5136c7d 100644
--- a/billing/tasks.py
+++ b/billing/tasks.py
@@ -5,6 +5,7 @@ from django.utils import timezone
 from procrastinate.contrib.django import app
 from api.notifications import send_sms
 from billing.models import Topup
+from django.utils.timezone import localtime
 
 logger = logging.getLogger(__name__)
 
@@ -28,6 +29,7 @@ def update_expired_topups(timestamp: int):
                     mobile=topup.user.mobile,
                     amount=topup.amount,
                     topup_id=str(topup.id),
+                    created_at=localtime(topup.created_at).isoformat(),
                 )
             else:
                 # Mark as notified even if we can't send SMS (no mobile number)
@@ -41,9 +43,9 @@ def update_expired_topups(timestamp: int):
 
 # Assuming you have a separate task for sending SMS if you go that route
 @app.task
-def send_sms_task(mobile: str, amount: float, topup_id: str):
+def send_sms_task(mobile: str, amount: float, topup_id: str, created_at: str):
     message = (
-        f"Dear {mobile}, \n\nYour topup of {amount} MVR has expired. "
+        f"Dear {mobile}, \n\nYour topup of {amount} MVR [created at {created_at}] has expired. "
         "Please make a new topup to update your wallet. \n\n- SAR Link"
     )
     send_sms(mobile, message)