Removed tilde operator from composer.json, it does not work as advertised: http://getcomposer.org/doc/01-basic-usage.md#package-versions

> vi composer.json

"require": {
    "nohex/contact_eixtension": "~0.4"
},

> composer update
[…]
Reading composer.json of nohex/contact_eixtension (0.4.0)
Importing tag 0.4.0 (0.4.0.0)
Reading composer.json of nohex/contact_eixtension (0.4.1)
Skipped tag 0.4.1, tag (0.4.1.0) does not match version (0.4.0.0) in composer.json
[…]