نصب پکیج sms در لاراول

سلام من میخوام از پکیج sms در لاراول 8 استفاده کنم.
این هم دستوری هستش که برای نصب میزنم.
composer require ipecompany/smsirlaravel
ولی با این مشکل مواجه میشم.

Your requirements could not be resolved to an installable set of packages.
  Problem 1
    - ipecompany/smsirlaravel[v1.0.0, ..., v1.0.7] require guzzlehttp/guzzle ~6.0 -> found guzzlehttp/guzzle[6.0.0, ..., 6.5.x-dev] but it conflicts with your root composer.json require (^7.0.1).
    - Root composer.json requires ipecompany/smsirlaravel ^1.0 -> satisfiable by ipecompany/smsirlaravel[v1.0.0, ..., v1.0.7].

Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.

Installation failed, reverting ./composer.json and ./composer.lock to their original content.

ممنون میشم من رو راهنمایی کنید.