{
  "name": "avataru/deck",
  "type": "library",
  "description": "Library to describe decks for deck-building games such as Magic the Gathering or Hearthstone",
  "keywords": ["deck", "card", "hearthstone", "magic the gathering", "mtg"],
  "license": "GPL-3.0",
  "authors": [
    {
      "name": "Mihai Zaharie",
      "email": "mihai@zaharie.ro",
      "homepage": "http://mihai.zaharie.ro"
    }
  ],
  "autoload": {
    "psr-4": {
      "Deck\\": "src/"
    }
  },
  "autoload-dev": {
    "psr-4": {
      "Deck\\Tests\\": "tests/"
    }
  },
  "require": {
    "php": ">5.5"
  },
  "require-dev": {
    "phpunit/phpunit": "~4.0"
  }
}

{
  "name": "avataru/deck",
  "type": "library",
  "description": "Library to describe decks for deck-building games such as Magic the Gathering or Hearthstone",
  "keywords": ["deck", "card", "hearthstone", "magic the gathering", "mtg"],
  "license": "MIT",
  "authors": [
    {
      "name": "Mihai Zaharie",
      "email": "mihai@zaharie.ro",
      "homepage": "http://mihai.zaharie.ro"
    }
  ],
  "autoload": {
    "psr-4": {
      "Deck\\": "src/"
    }
  },
  "autoload-dev": {
    "psr-4": {
      "Deck\\Tests\\": "tests/"
    }
  },
  "require": {
    "php": ">5.5"
  },
  "require-dev": {
    "phpunit/phpunit": "~4.0"
  }
}

Change license to MIT in Composer config
Change license to MIT in Composer config