# Dropping support for Android KitKat

> Flutter is raising the minimum supported Android version from KitKat (API 19) to Lollipop (API 21).




:::important
These breaking change docs are accurate, as of the release
under which they are published. Over time, the
workarounds described here might become inaccurate.
We don't, in general, keep these breaking change docs up
to date as of each release.

这些破坏性改动文档的准确性仅限于其发布时对应的版本。
随着时间的推移，文档中描述的方案可能会逐渐失效。
通常情况下，我们不会在每次发布新版本时都对这些文档进行同步更新。

The [breaking change index file](/release/breaking-changes)
lists the docs created for each release.

[破坏性改动列表](/release/breaking-changes) 
列出了每个版本的文档。

:::


## Summary

Flutter's minimum supported Android version is now Lollipop (API 21).
Beginning with Flutter's 3.22 stable release,
Flutter will no longer work on devices running Android KitKat (API 19).

## Context

The context, purpose, and description of this deprecation can be found in
the [go/rfc-android-k-deprecation][] design document.

## Migration guide

Flutter developers targeting Android will need to increase the
`minSdkVersion` in their `build.gradle` and `AndroidManifest.xml` files
from `19` to at least `21`.

## Timeline

In stable release: 3.22

[go/rfc-android-k-deprecation]: https://flutter.cn/go/rfc-android-k-deprecation