composer-php – 最小稳定性问题

Could not find package require at any version for your minimum-stability (dev). Check the package spelling or your minimum-stability.

这是第二次这样做 – 以前使用html2text.
怎么解决？

编辑：
我的composer.json：

{
  "name": "vendor_name/package_name","description": "description_text","minimum-stability": "dev","license": "proprietary","authors": [
    {
      "name": "author's name","email": "email@example.com"
    }
  ],"require": {
    ...
  }
}