title: webdriver-manager how to install selenium version npm
body: <p>I installed webdriver-manager by installing protractor via npm install with package.json. Under the root dir /webdriver-manager node module there is a config.json that contains</p>
  
  <pre><code>    {
        "webdriverVersions": {
          "selenium": "2.53.1",
          "chromedriver": "2.27",
          "geckodriver": "v0.13.0",
          "iedriver": "2.53.1",
          "androidsdk": "24.4.1",
          "appium": "1.6.0"
        },
        "cdnUrls": {
          "selenium": "https://selenium-release.storage.googleapis.com/",
          "chromedriver": "https://chromedriver.storage.googleapis.com/",
          "geckodriver": "https://github.com/mozilla/geckodriver/releases/download/",
          "iedriver": "https://selenium-release.storage.googleapis.com/",
          "androidsdk": "http://dl.google.com/android/"
        }
  
  }
  </code></pre>
  
  <p>I'm thinking here is where I can change the version of selenium to whatever I want and then run webdriver-manager update command. When I do that though the selenium version installed is different than what is listed above. The version that gets installed is selenium 3.1.0 and gecko 0.14.0. Chromedriver is installing 2.27 and matching. Is this the way to install different versions and if so why are the versions different? Thanks.</p>