 <p>You need to update the default Android SDK <code>proguard.jar</code> with the latest version of Proguard found here:</p> <p><a href="https://sourceforge.net/projects/proguard/files/" rel="nofollow">https://sourceforge.net/projects/proguard/files/</a></p> <p>I would recommend that you install this on the side of the default version that Android ships in <code>android-sdk\tools\proguard</code>. Simply rename the existing folder to something else and add the new version of <code>proguard</code>.</p> <p>This is listed in the Xamarin.Android 7.0 release notes:</p> <p><a href="https://developer.xamarin.com/releases/android/xamarin.android_7/xamarin.android_7.0/" rel="nofollow">https://developer.xamarin.com/releases/android/xamarin.android_7/xamarin.android_7.0/</a></p> <p>In which the following bug was logged as well:</p> <p><a href="https://bugzilla.xamarin.com/show_bug.cgi?id=44187" rel="nofollow">https://bugzilla.xamarin.com/show_bug.cgi?id=44187</a></p> <p>Which is coordinated with a Pull Request in the Xamarin.Android repository:</p> <p><a href="https://github.com/xamarin/xamarin-android/pull/209" rel="nofollow">https://github.com/xamarin/xamarin-android/pull/209</a></p>