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Upgrading Flutter
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We strongly recommend tracking the beta branch in the flutter repository, which is where we push 'known good builds' of Flutter. If you need to view the very latest changes, you can track the master branch, but note this is where we do our daily development, so stability is much lower.

To view your current branch, use flutter channel.

To change branch, use flutter channel beta / flutter channel master.

Specifying the Flutter SDK for your project

You specify dependencies from the Flutter SDK in the pubspec.yaml file. For example, the following snippet specifies that the flutter and flutter_test packages use the Flutter SDK.

name: hello_world
dependencies:
  flutter:
    sdk: flutter
dev_dependencies:
  flutter_test:
    sdk: flutter

The sdk: flutter line tells the flutter command-line tool find the correct package for you.

Do not use the pub get or pub upgrade commands to manage your dependencies. Instead, use flutter packages get or flutter packages upgrade. If you want to use pub manually, you can run it directly by setting the FLUTTER_ROOT environment variable.

Upgrading Flutter channel and your packages

To update both the Flutter SDK and your packages, use the flutter upgrade command from the root of your app (the same directory that contains the pubspec.yaml file):

$ flutter upgrade

Upgrading your packages

If you've modified your pubspec.yaml file, or you want to only update the packages your app depends upon instead of both the packages and Flutter itself, then use the following commands:

  • flutter packages get to get all the dependencies listed in the pubspec.yaml file, or
  • flutter packages upgrade to get the latest versions of all the dependencies listed in the pubspec.yaml file

We publish breaking change announcements to our mailing list. We strongly recommend that you subscribe to get announcements from us. Plus, we'd love to hear from you!