{
  "name": "grunt-webp",
  "description": "Convert images to WebP format.",
  "version": "0.0.4",
  "homepage": "https://github.com/somerandomdude/grunt-webp",
  "author": {
    "name": "P.J. Onori",
    "email": "pj@somerandomdude.com",
    "url": "http://somerandomdude.com"
  },
  "repository": {
    "type": "git",
    "url": "git://github.com/somerandomdude/grunt-webp.git"
  },
  "bugs": {
    "url": "https://github.com/somerandomdude/grunt-webp/issues"
  },
  "licenses": [
    {
      "type": "MIT",
      "url": "https://github.com/somerandomdude/grunt-webp/blob/master/LICENSE-MIT"
    }
  ],
  "main": "Gruntfile.js",
  "engines": {
    "node": ">=0.8.0"
  },
  "scripts": {
    "test": "grunt test"
  },
  "dependencies": {
    "async": "~0.2.10"
  },
  "devDependencies": {
    "grunt-contrib-clean": "~0.5.0",
    "grunt": "~0.4.2"
  },
  "peerDependencies": {
    "grunt": "~0.4.1"
  },
  "keywords": [
    "gruntplugin",
    "grunt.js",
    "webp"
  ]
}

{
  "name": "grunt-webp",
  "description": "Convert images to WebP format.",
  "version": "0.0.4",
  "homepage": "https://github.com/somerandomdude/grunt-webp",
  "author": {
    "name": "P.J. Onori",
    "email": "pj@somerandomdude.com",
    "url": "http://somerandomdude.com"
  },
  "repository": {
    "type": "git",
    "url": "git://github.com/somerandomdude/grunt-webp.git"
  },
  "bugs": {
    "url": "https://github.com/somerandomdude/grunt-webp/issues"
  },
  "licenses": [
    {
      "type": "MIT",
      "url": "https://github.com/somerandomdude/grunt-webp/blob/master/LICENSE-MIT"
    }
  ],
  "main": "Gruntfile.js",
  "engines": {
    "node": ">=0.8.0"
  },
  "scripts": {
    "test": "grunt test"
  },
  "dependencies": {
    "async": "~0.9.0"
  },
  "devDependencies": {
    "grunt-contrib-clean": "~0.5.0",
    "grunt": "~0.4.2"
  },
  "peerDependencies": {
    "grunt": "~0.4.1"
  },
  "keywords": [
    "gruntplugin",
    "grunt.js",
    "webp"
  ]
}

Update the version of async to ~0.9.0
Update the version of async to ~0.9.0
