Error intervention/image

[angelorc]

Hello, when I try to install I get this error

composer require pingpong/admin
Using version ^2.1 for pingpong/admin
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)

[RuntimeException]
Could not load package intervention/image in http://packagist.org: [UnexpectedValueException] Could not parse version constraint 4.x.x: Invalid version string "4.x.x"

[UnexpectedValueException]
Could not parse version constraint 4.x.x: Invalid version string "4.x.x"