Unable to install due to a package problem

[JoaoBGusmao]

I'm unable to install React-Restify because of a problem during the installation. The error says:

./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - Installation request for capmousse/react-restify 1.1.1 -> satisfiable by capmousse/react-restify[1.1.1].
    - capmousse/react-restify 1.1.1 requires react/http 0.5.* -> satisfiable by react/http[0.5.x-dev, v0.5.0] but these conflict with your requirements or minimum-stability.


Installation failed, reverting ./composer.json to its original content.

I already have the last react/http installed

[CapMousse]

What's your composer.json content ?

[Sentoki]

    - Installation request for react/http == 0.7.4.0 -> satisfiable by react/http[v0.7.4].
    - capmousse/react-restify 1.1.0 requires react/http 0.5.* -> satisfiable by react/http[v0.5.0].
    - capmousse/react-restify 1.1.1 requires react/http 0.5.* -> satisfiable by react/http[v0.5.0].
    - Conclusion: don't install react/http v0.5.0
    - Installation request for capmousse/react-restify ^1.1 -> satisfiable by capmousse/react-restify[1.1.0, 1.1.1].```


Error even without composer.json