Not able to update composer.lock file about heroku-wp HOT 4 CLOSED

In order to generate a new composer.lock file you will need to either have hhvm installed (Heroku docs) or tell composer to ignore platform dependencies. The latter is easier you can simply use the following command:

$ composer update --ignore-platform-reqs

I've updated the README with this info as well:

2d69545

Thanks for filing an issue for this!

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I'm getting the following message when running composer update --ignore-platform-reqs:

[RuntimeException]
The "--ignore-platform-reqs" option does not exist.

Anyone know how to resolve this? Thank you!

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@griffiths try updating composer with composer selfupdate and try again.

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Nice one, thank you!

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