Error on try to install composer require tcg/voyager

jcasilva

Hello,
when i try to install composer require tcg/voyager this error appears. What is wrong?
Using version ¹.4 for tcg/voyager
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Killed

I am using PHP CLI 5.6 to try do this.

aaPanel_Jose

It seems that this Packagist no longer supports 5.4, we will arrange a time update