This post provides a place to collect info around migrating a mature Android application from pre Flutter 3.16 to 3.22 and migrating to the new Gradle DSL changes. It also contains information about Android build, dependency and 3rd party management in general, and links to monitor Gradle, Kotlin, Java and other tooling versions. General info on Gradle migration Flutter uses Gradle plugins to build Android apps. Before Flutter 3.16 “Gradle’s legacy, imperative apply script method” was used.