admin laravel with coposer

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بنده میخام یک ادمین لاراول برای وبسایت خودم نصب کنم که متاسفانه با یک اررو مواجه میشم و به هیچ نتیجه نمی رسم دوستان اگر کمک کنید ممنون میشم
C:xampphtdocspayam>composer require tcg/voyager
Using version ^1.0 for tcg/voyager
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

Problem 1
- illuminate/support v5.5.2 requires php >=7.0 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.5.0 requires php >=7.0 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.9 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.36 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.27 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.19 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.17 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.13 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- illuminate/support v5.4.0 requires php >=5.6.4 -> your PHP version (5.6.3) does not satisfy that requirement.
- tcg/voyager v1.0.0 requires illuminate/support ~5.4.0|~5.5.0 -> satisfiable by illuminate/support[v5.4.0, v5.4.13, v5.4.17, v5.4.19, v5.4.27, v5.4.36, v5.4.9, v5.5.0, v5.5.2].
- Installation request for tcg/voyager ^1.0 -> satisfiable by tcg/voyager[v1.0.0].

Installation failed, reverting ./composer.json to its original content.
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