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and other goodies. Because React Native projects are essentially made up of an Android project, an
iOS project and a JavaScript project, all combined under an npm package, upgrading can be rather
tricky. But we try to make it easy for you. Here's what you need to do to upgrade from an older
version of React Native:</p><h2><a class="anchor" name="1-upgrade-the-react-native-dependency"></a>1. Upgrade the <code>react-native</code> dependency <a class="hash-link" href="#1-upgrade-the-react-native-dependency">#</a></h2><p>Note the latest version of the <code>react-native</code> npm package from here:</p><ul><li><a href="https://www.npmjs.com/package/react-native">https://www.npmjs.com/package/react-native</a></li></ul><p>Open your <code>package.json</code> file and update the version of <code>react-native</code> under <code>dependencies</code> to the
latest version. Now, in a terminal run:</p><div class="prism language-javascript">$ npm install</div><h2><a class="anchor" name="2-upgrade-your-project-templates"></a>2. Upgrade your project templates <a class="hash-link" href="#2-upgrade-your-project-templates">#</a></h2><p>The new npm package will likely contain updates to the files that are normally generated when you
version of React Native:</p><h2><a class="anchor" name="1-upgrade-the-react-native-dependency"></a>1. Upgrade the <code>react-native</code> dependency <a class="hash-link" href="#1-upgrade-the-react-native-dependency">#</a></h2><p>Note the latest version of the <code>react-native</code> npm package from here (or use <code>npm info react-native</code> to check):</p><ul><li><a href="https://www.npmjs.com/package/react-native">https://www.npmjs.com/package/react-native</a></li></ul><p>Now install that version of <code>react-native</code> in your project with <code>npm install --save</code>. For example, to upgrade to the version <code>0.18</code>, in a terminal run:</p><div class="prism language-javascript">$ npm install <span class="token operator">--</span>save react<span class="token operator">-</span>native@<span class="token number">0.18</span></div><h2><a class="anchor" name="2-upgrade-your-project-templates"></a>2. Upgrade your project templates <a class="hash-link" href="#2-upgrade-your-project-templates">#</a></h2><p>The new npm package will likely contain updates to the files that are normally generated when you
run <code>react-native init</code>, like the iOS and the Android sub-projects. To get these latest changes,
run this in a terminal:</p><div class="prism language-javascript">$ react<span class="token operator">-</span>native upgrade</div><p>This will check your files against the latest template and perform the following:</p><ul><li>If there is a new file in the template, it is simply created.</li><li>If a file in the template is identical to your file, it is skipped.</li><li>If a file is different in your project than the template, you will be prompted; you have options
to view a diff between your file and the template file, keep your file or overwrite it with the