Unable to set invoice as paid out of band

[galzetta]

I'm using the following call in order to mark an Invoice as paid_out_of_band:

$stripe_invoice->pay(['paid_out_of_band' => true]);

This should be the correct way to call that method according to the documentation: $stripe_invoice->pay(['paid_out_of_band' => true]);
However it seems like the stripe-php library is considering this as simply calling ->pay() without arguments since from the Stripe dashboard I see no paid_out_of_band query parameter (or any reference of it in the body):

Am I using the library incorrectly (but how should I know if it is correct if there is not a single example online and the documentation seems to imply that what I'm doing is correct?) or is there a bug iwth the pay() function?

[ob-stripe]

@galzetta You're currently using stripe-php 4.13.0. You need to upgrade to stripe-php 5.0.0 or a more recent version.

[ob-stripe]

(Closing, but feel free to reply!)