composer error

➜  media-bundle git:(master) composer install --dev --prefer-source
Loading composer repositories with package information
Installing dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1
    - sonata-project/doctrine-phpcr-admin-bundle 1.1.0 requires doctrine/phpcr-odm ~1.1 -> satisfiable by doctrine/phpcr-odm[1.1.0, 1.1.1, 1.1.2].
    - sonata-project/doctrine-phpcr-admin-bundle 1.1.1 requires doctrine/phpcr-odm ~1.1 -> satisfiable by doctrine/phpcr-odm[1.1.0, 1.1.1, 1.1.2].
    - sonata-project/doctrine-phpcr-admin-bundle 1.0.0 requires doctrine/phpcr-odm 1.0.* -> satisfiable by doctrine/phpcr-odm[1.0.0, 1.0.1].
    - sonata-project/doctrine-phpcr-admin-bundle 1.0.1 requires doctrine/phpcr-odm 1.0.* -> satisfiable by doctrine/phpcr-odm[1.0.0, 1.0.1].
    - sonata-project/doctrine-phpcr-admin-bundle 1.0.2 requires doctrine/phpcr-odm 1.0.* -> satisfiable by doctrine/phpcr-odm[1.0.0, 1.0.1].
    - doctrine/phpcr-odm 1.1.2 requires phpcr/phpcr-implementation ~2.1.0 -> no matching package found.
    - doctrine/phpcr-odm 1.1.1 requires phpcr/phpcr-implementation ~2.1.0 -> no matching package found.
    - doctrine/phpcr-odm 1.1.0 requires phpcr/phpcr-implementation ~2.1.0 -> no matching package found.
    - doctrine/phpcr-odm 1.0.1 requires phpcr/phpcr-implementation ~2.1.0 -> no matching package found.
    - doctrine/phpcr-odm 1.0.0 requires phpcr/phpcr-implementation ~2.1.0 -> no matching package found.
    - Installation request for sonata-project/doctrine-phpcr-admin-bundle ~1.0 -> satisfiable by sonata-project/doctrine-phpcr-admin-bundle[1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.1.1].

Potential causes:
 - A typo in the package name
 - The package is not available in a stable-enough version according to your minimum-stability setting
   see <https://groups.google.com/d/topic/composer-dev/_g3ASeIFlrc/discussion> for more details.

Read <http://getcomposer.org/doc/articles/troubleshooting.md> for further common problems.

composer.json

{
    "name": "sonata-project/media-bundle",
    "type": "symfony-bundle",
    "description": "Symfony SonataMediaBundle",
    "keywords": ["media", "sonata", "youtube", "dailymotion", "vimeo", "pdf", "file", "upload"],
    "homepage": "http://sonata-project.org/bundles/media",
    "license": "MIT",
    "authors": [
        {
            "name": "Thomas Rabaix",
            "email": "thomas.rabaix@sonata-project.org",
            "homepage": "http://sonata-project.org"
        },
        {
            "name": "Sonata Community",
            "homepage": "https://github.com/sonata-project/SonataMediaBundle/contributors"
        }
    ],
    "require": {
        "symfony/symfony": "~2.3",
        "sonata-project/core-bundle": "~2.2",
        "sonata-project/notification-bundle": "~2.2",
        "sonata-project/easy-extends-bundle": "~2.1",
        "sonata-project/doctrine-extensions": "~1.0",
        "knplabs/gaufrette": ">=0.1.4",
        "imagine/Imagine": "*@stable",
        "kriswallsmith/buzz": "0.*",
        "friendsofsymfony/rest-bundle": "~1.1",
        "jms/serializer-bundle": "~0.11",
        "nelmio/api-doc-bundle": "~2.4",
        "sonata-project/intl-bundle": "~2.2"
    },
    "require-dev": {
        "sonata-project/doctrine-orm-admin-bundle": "~2.3@dev",
        "sonata-project/admin-bundle": "~2.3@dev",
        "sonata-project/formatter-bundle": "~2.2@dev",
        "sonata-project/core-bundle": "~2.2@dev",
        "amazonwebservices/aws-sdk-for-php": "~1.5",
        "sonata-project/seo-bundle": "~1.1",
        "doctrine/mongodb-odm": "~1.0@dev",
        "jackalope/jackalope-doctrine-dbal": "~1.1"
    },
    "suggest": {
        "sonata-project/doctrine-orm-admin-bundle": "~2.3",
        "liip/imagine-bundle": "~0.9",
        "amazonwebservices/aws-sdk-for-php": "~1.5",
        "rackspace/php-opencloud": "~1.6",
        "sonata-project/seo-bundle": "~1.1",
        "tilleuls/ckeditor-sonata-mediabundle": "~1.0"
    },
    "autoload": {
        "psr-4": { "Sonata\\MediaBundle\\": "" }
    },
    "extra": {
        "branch-alias": {
            "dev-master": "2.3.x-dev"
        }
    }
}