This plugin scans a subset of Google Play services and Firebase dependencies during the Gradle build. It raises an error when version resolution is specified in the POM file but not honored by the Gradle build system. This can happen when Gradle's default dependency resolution strategy is used because it uses the highest referenced version even if it crossed the major version boundary.

In your app's build.gradle:

apply plugin: 'com.google.android.gms.strict-version-matcher-plugin'

In order to use this plugin, you will also need to add the following to your buildscript classpath, obtained from Google’s Maven repository:

classpath 'com.google.android.gms:strict-version-matcher-plugin:1.2.4'

These instructions are also documented online