Cant update composer after adding this to composer.json

[astroanu]

"require": { "philipbrown/worldpay": "~2.0" }

i get this

Updating dependencies (including require-dev) Authentication required (packagist.org): Username:

[philipbrown]

Hmm, I guess it's just a composer problem, you don't need authentication for packagist.org

{
    "require": {
        "philipbrown/worldpay": "~2.0"
    }
}

composer install

This works fine for me ^^

I would update composer and try again.

Sorry!

[astroanu]

if i run composer install i get this

Warning: The lock file is not up to date with the latest changes in composer.json. You may be getting outdated dependencies. Run update to update them.

[philipbrown]

What happens when you run composer update ?

[astroanu]

I get the previous message : It asks for a username

Updating dependencies (including require-dev) Authentication required (packagist.org): Username: