composer php - Error composing wyrihaximus/ratchet (CakePHP Plugin) -

composer php - Error composing wyrihaximus/ratchet (CakePHP Plugin) -

i'm trying install wyrihaximus' ratchet-plugin cakephp utilize websockets. added next line in cakes composer.json:

"require": { "php": ">=5.2.8", "ext-mcrypt": "*", "react/socket": "0.3.*|0.4.*", "wyrihaximus/ratchet": "dev-master" }, "config": { "vendor-dir": "/app/vendor/" },

when run "composer update" in cli throws next error though i'm running php 5.5:

problem 1 - installation request wyrihaximus/ratchet dev-master -> satisfiable wyrihaximus/ratchet[dev-master]. - wyrihaximus/ratchet dev-master requires php >=5.4.0 -> no matching bundle found.

what's cause , how prepare that?

looking @ output don't have php5.4 or higher. can check php -v.

cakephp composer-php ratchet