Open the Wallet app on your iPhone
Tap the card you want to update
Tap the More button
Tap Card Details
Tap Update Card Information if available
Follow the on-screen instructions
If the card was replaced, remove the old card
Tap the Add button in Wallet
Add the new card again
Verify the card with your bank or card issuer if prompted
On Apple Watch, open the Watch app on iPhone
Tap Wallet & Apple Pay
Select the card
Remove the old card if needed
Add the updated card again
On Mac with Touch ID, open System Settings
Click Wallet & Apple Pay
Select the card
Remove and re-add the updated card if needed