{
	"name": "cakephp/upgrade",
	"description": "CakePHP upgrade tool",
	"homepage": "http://cakephp.org",
	"type": "project",
	"license": "MIT",
	"require": {
		"cakephp/cakephp": "~3.0",
		"cakephp/app": "~3.0",
		"phpunit/phpunit": "*",
		"cakephp/plugin-installer": "^0.0.12"
	},
	"autoload": {
		"psr-4": {
			"Cake\\Upgrade\\": "src",
			"Cake\\Upgrade\\Test\\": "tests"
		}
	},
	"minimum-stability" : "dev",
	"prefer-stable": true,
	"support": {
		"source": "https://github.com/cakephp/upgrade"
	},
    "scripts": {
        "post-autoload-dump": "Cake\\Composer\\Installer\\PluginInstaller::postAutoloadDump"
    }
}

{
	"name": "cakephp/upgrade",
	"description": "CakePHP upgrade tool",
	"homepage": "http://cakephp.org",
	"type": "project",
	"license": "MIT",
	"require": {
		"cakephp/cakephp": "~3.0",
		"cakephp/app": "~3.0",
		"phpunit/phpunit": "*",
		"cakephp/plugin-installer": "~1.0"
	},
	"autoload": {
		"psr-4": {
			"Cake\\Upgrade\\": "src",
			"Cake\\Upgrade\\Test\\": "tests"
		}
	},
	"minimum-stability" : "dev",
	"prefer-stable": true,
	"support": {
		"source": "https://github.com/cakephp/upgrade"
	},
    "scripts": {
        "post-autoload-dump": "Cake\\Composer\\Installer\\PluginInstaller::postAutoloadDump"
    }
}

Bump up version dependency of plugin-installer
Bump up version dependency of plugin-installer