{
  "name": "concrete5",
  "devDependencies": {
    "browser-sync": "^2.24.5",
    "browser-sync-webpack-plugin": "2.0.1",
    "download": "~4.4.3",
    "dropzone": "^5.5.1",
    "grunt": "~0.4.1",
    "grunt-contrib-concat": "~0.3.0",
    "grunt-contrib-cssmin": "~0.6.2",
    "grunt-contrib-jshint": "^1.1.0",
    "grunt-contrib-less": "~0.11.0",
    "grunt-contrib-uglify": "~2.0.0",
    "grunt-contrib-watch": "^0.6.1",
    "grunt-env": "^0.4.4",
    "grunt-newer": "^0.7.0",
    "grunt-webpack": "^3.1.2",
    "interactjs": "^1.3.4",
    "laravel-mix": "^2.1.11",
    "less": "^3.7.1",
    "less-loader": "^4.1.0",
    "shelljs": "0.2.6",
    "temp": "~0.8.1",
    "uglifyjs-webpack-plugin": "^1.2.7",
    "vue": "^2.5.7",
    "webpack": "^3.12.0 <4.0.0",
    "webpack-dev-server": "^2.11.1 <3.0.0"
  }
}

{
  "name": "concrete5",
  "devDependencies": {
    "browser-sync": "^2.24.5",
    "browser-sync-webpack-plugin": "2.0.1",
    "download": "~4.4.3",
    "dropzone": "^5.5.1",
    "grunt": "~0.4.1",
    "grunt-contrib-concat": "~0.3.0",
    "grunt-contrib-cssmin": "~0.6.2",
    "grunt-contrib-jshint": "^1.1.0",
    "grunt-contrib-less": "~0.11.0",
    "grunt-contrib-uglify": "~2.0.0",
    "grunt-contrib-watch": "^0.6.1",
    "grunt-env": "^0.4.4",
    "grunt-newer": "^0.7.0",
    "grunt-webpack": "^3.1.2",
    "interactjs": "^1.3.4",
    "laravel-mix": "^2.1.11",
    "less": "^3.7.1",
    "less-loader": "^4.1.0",
    "shelljs": "0.2.6",
    "temp": "~0.8.1",
    "uglifyjs-webpack-plugin": "^1.2.7",
    "vue": "^2.5.7"
  }
}

Remove explicit webpack version requirements
Remove explicit webpack version requirements
