How to update Composer in Windows 10

Try

composer self-update

If this doesn't work check your PATH variable, if it's not there try searching composer.bat in windows and add it to your PATH variable. Normally, its in following path.

C:\ProgramData\ComposerSetup\bin

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Windows 10 update for Composer still works (end of 2020, pre version 2) with:

https://i.stack.imgur.com/DKmcO.png

composer self-update --1 it will be updated from 1.x

composer self-update --2 it will be updated from 2.x and from 1.x

composer self-update --rollback If you need to rollback to your previous version

composer -V For check your composer version

composer self-update:

If you run composer self-update from 1.x, it will warn you that a new stable major version of Composer is available, and you can use composer self-update --2 to migrate to it.

So run composer self-update --2

How easy is it to upgrade?

Composer 2.0 still supports PHP 5.3 and above, much like Composer 1.x

composer.lock files are interoperable between versions, so you can upgrade to 2.0 and roll back easily if needed.

Most commands and arguments remain the same, and largely what you know about Composer remains true in 2.0.

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Windows 10 update for Composer still works (end of 2020, pre version 2) with:

composer self-update

If you need to rollback to your previous version, you can do that with:

composer self-update --rollback

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Try.

php composer.phar self-update

'update' updates your dependencies not composer itself.

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Use

composer self-update --2

By default, the installer and composer self-update will download the latest stable version only. To programmatically install specific major versions you can use the --1 or --2 flag.

To go back to the previous version:

composer self-update --rollback

To check the current version

composer --version

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