This package is abandoned.
Use symfony/flex instead and configure its extra.symfony.require setting to the version range you'd like to have.
symfony/flex
extra.symfony.require
For example, composer config extra.symfony.require "~4.1.0" restricts the versions of all Symfony components to ~4.1.0.
composer config extra.symfony.require "~4.1.0"
~4.1.0