not able to install this package globally

[developerium]

I'm not able to install this package globally with composer
I'm doing this command :

composer require global phpunit/phpunit-selenium

all I get is :

[InvalidArgumentException]
Could not find package global at any version for your minimum-stability (stable). Check the package spelling or your minimum-stability

how can I get past this?

[giorgiosironi]

There is a typo in the command, I believe it should be:

composer global require phpunit/phpunit-selenium

which works for me.