I accidentally put in the wrong number for my credit card in Apple wallet. How do I change it?

I have ONE number wrong in my credit card number in apple wallet. It won't let me edit that number! I've tried to remove the card and add it again, but it says the credit card already exists. I'm SO frustrated that this is isn't a simple fix. It won't even show me the entire credit card number. There has to be a way to update this.