How to fix Your Project requires a newer version of kotlin Gradle plugin in flutter

If you are a flutter developer and have the flutter version 2.10.0 and below. You may likely experience “Your Project requires a newer version of kotlin Gradle plugin” when you upgrade (flutter upgrade) your flutter SDK to 2.12.0 as of the date of publishing this or even newer in the future.

After upgrading your flutter SDK to 2.12.0 or newer you may not experience any issues while developing your app but you will get this error message especially when you want to run your app in Android emulator.

To fix this simply follow the steps below;

• Using your favorite IDE i.e VSCode, or Android Studio, Navigate to your Flutter_App/Android/build.gradle

• Next you replace the current values of ex.kotlin_version to the current version

The current version can be found in https://kotlinlang.org/docs/gradle.html#plugin-and-versions

This will now be ;

buildscript {
    ext.kotlin_version = '1.6.10'
    repositories {
        google()
        mavenCentral()
    }
 
    dependencies {
        classpath 'com.android.tools.build:gradle:7.0.2'
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

• Lastly Save” the file and run your project again and your flutter project will run now without “Your Project requires a newer version of kotlin Gradle plugin” errors again

PS: As of the time of writing this, the versions may have changed but the principle should still apply.

If you experience an internet connectivity issues while upgrading your flutter SDK, then you may have more problems than as stated in this article. One of the problems you may encounter is some of the files not downloading properly.  To fix that, first run “flutter clean” and then you can re-run the command “Flutter upgrade” to ensure all files have been properly downloaded.

If you still have issues building your application, you can Upgrade Flutter project Dependencies. To do this you can run this command in your terminal “Flutter pub upgrade”.

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