# Flutter Gradle build fail

**URL:** <https://discuss.gradle.org/t/flutter-gradle-build-fail/32600>\
**Category:** Help/Discuss\
**Created:** [July 29, 2019, 8:30pm UTC](https://discuss.gradle.org/t/flutter-gradle-build-fail/32600 "2019-07-29T20:30:17Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![naht-dev](https://avatars.discourse-cdn.com/v4/letter/n/df788c/32.png) [@naht-dev](https://discuss.gradle.org/u/naht-dev)\
**Post date:** [July 29, 2019, 8:30pm UTC](https://discuss.gradle.org/t/flutter-gradle-build-fail/32600/1 "2019-07-29T20:30:17Z")

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Hello, I try to build an APK with flutter but, when I run `flutter build apk --split-per-abi` I got this error `Execution failed for task ':app:transformClassesWithAndroidGradleClassShrinkerForRelease'.`. The last month I release an APK in google play without this error and now I add some new widgets and test on my phone, everything works, then I check in a post and I found that `build.gradle` needs to update Gradle to the last version but my Gradle has the last version. Anyone knows how to fix or where can I check?

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**Author:** ![sadhanoff](https://avatars.discourse-cdn.com/v4/letter/s/f475e1/32.png) [@sadhanoff](https://discuss.gradle.org/u/sadhanoff)\
**Post date:** [September 5, 2019, 9:04am UTC](https://discuss.gradle.org/t/flutter-gradle-build-fail/32600/2 "2019-09-05T09:04:49Z")

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Please checkout your files for a fresh Gradle versions:  
**android/build.gradle**

> ```
> dependencies {
> classpath 'com.android.tools.build:gradle:3.+'
> 
> ```

**android/gradle/wrapper/gradle-wrapper.properties**

> distributionUrl=https\://services.gradle.org/distributions/gradle-5.6-all.zip