how to update composer in laravel
snippet in php

update laravel version global

user2756

FIRST METHOD :
===============
# uninstall the package
composer global remove laravel/installer

# reinstall
composer global require laravel/installer
  
SECOND METHOD : 
================
  
Just upgraded from Laravel 7 to 8, and running 
  composer global require "laravel/installer:^4.0" 

did the trick for me (i.e., without removeing first)

laravel composer update

user8973

php composer.phar update

how to update composer in laravel

user8459

composer global require "laravel/installer:^4.0"