<p>Retrofit uses <ahref="https://github.com/square/okio">Okio</a> under the hood, so you may want to look at its <ahref="https://github.com/square/okio#proguard">ProGuard rules</a> as well.</p>
<h4>R8 / ProGuard</h4>
<p>If you are using R8 or ProGuard add the options from <ahref="https://github.com/square/retrofit/blob/master/retrofit/src/main/resources/META-INF/proguard/rules.pro">this file</a>.</p>
<p>You might also need rules for OkHttp and Okio which are dependencies of this library.</p>