TESCO shoppers are being urged to check their Clubcard app ahead of a huge change tomorrow.
The supermarket giant has issued a deadline for customers to update to the latest version.
Bosses have warned that from March 31, older versions of the Clubcard app will no longer work.
In an email sent to customers, Tescosaid: “To increase your data protection and online security, we're updating our Tesco app to a newer version.
“After March 31, older versions of the app will no longer work.
“To keep shopping and enjoying all of your Clubcardbenefitson your app, make sure you have the latest version before March 31.”
Tesco said the behind-the-scenes update won't affect its website Tesco.com.
Shoppers can update their Tesco grocery and Clubcard apps via the Apple App Store or Google Play.
It's not the first time Tesco has made a change to its app in recent weeks.
The UK's biggest supermarket axed the popular Tesco Pay+ feature from the app at the start of the month.
It means shoppers can no longer pay for their shop and collect Clubcard points in one swipe at the checkout.
A spokesperson for Tesco said the supermarket regularly reviewed the payment options available to shoppers.
This comes as Tesco shoppers are just realising the supermarket is giving out free products and discounts on receipts.
Britain's largest grocery storeis known for giving shoppers discounters through its Clubcard rewards.
But many shoppers are unaware that receipts are always a great way to nab a bargain.
In the past, eagle-eyed customers have gotten free Pampers nappiesworth £10 just by checking their receipt.
Speaking at the time, the mum said: “It pays to always select receipt at Tesco, you never know what free offer would come your way”.
If you find a freebie on your receipt, you will then need to hand it over to a store worker to claim your item.
