 <p>Remove:</p> <pre><code>maven { url "http://dl.bintray.com/populov/maven" } </code></pre> <p>and instead of</p> <pre><code>compile 'com.viewpagerindicator:library:2.4.1@aar' </code></pre> <p>add:</p> <pre><code>compile 'com.mcxiaoke.viewpagerindicator:library:2.4.1@aar' </code></pre> <p>Clean and sync gradle.</p>