laravel5.8.38でbensampo/laravel-enumインストール時にエラーが発生

Question

前提・実現したいこと

laravel5.8.38でbensampo/laravel-enumインストール時にエラーが発生。
解決方法についてご教示頂きたいです。

発生している問題・エラーメッセージ

root@ae2290ee090e:/var/www/test-app# composer require bensampo/laravel-enum
Do not run Composer as root/super user! See https://getcomposer.org/root for details
Using version ^2.1 for bensampo/laravel-enum
./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
    - Installation request for bensampo/laravel-enum ^2.1 -> satisfiable by bensampo/laravel-enum[v2.1.0].
    - Conclusion: remove laravel/framework v5.8.38
    - Conclusion: don't install laravel/framework v5.8.38
    - bensampo/laravel-enum v2.1.0 requires illuminate/support ^7.5 -> satisfiable by illuminate/support[7.x-dev, v7.10.0, v7.10.1, v7.10.2, v7.10.3, v7.11.0, v7.12.0, v7.13.0, v7.14.0, v7.14.1, v7.15.0, v7.16.0, v7.16.1, v7.17.0, v7.17.1, v7.17.2, v7.18.0, v7.19.0, v7.19.1, v7.20.0, v7.21.0, v7.5.0, v7.5.1, v7.5.2, v7.6.0, v7.6.1, v7.6.2, v7.7.0, v7.7.1, v7.8.0, v7.8.1, v7.9.0, v7.9.1, v7.9.2].
    - don't install illuminate/support 7.x-dev|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.10.3|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.11.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.12.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.13.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.14.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.14.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.15.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.16.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.16.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.17.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.17.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.17.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.18.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.19.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.19.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.20.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.21.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.5.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.5.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.5.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.6.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.6.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.6.2|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.7.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.7.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.8.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.8.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.9.0|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.9.1|don't install laravel/framework v5.8.38
    - don't install illuminate/support v7.9.2|don't install laravel/framework v5.8.38
    - Installation request for laravel/framework (locked at v5.8.38, required as 5.8.*) -> satisfiable by laravel/framework[v5.8.38].


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

試したこと

composer update実行後、再度インストールを試みましたが失敗しました。

補足情報（FW/ツールのバージョンなど）

composer.lock抜粋

"name": "laravel/framework",
"version": "v5.8.38",

Answer 1

当該パッケージの最新版(2.x)はLaravel 7.5+に対応しています．

Laravel 6またはそれ以前(5.6+)では1.xが利用できるはずです．

composer require bensampo/laravel-enum:^1.38.0

(なお，Laravel 5.8はすでにEOLを迎えていますので6.x LTSへの更新の検討をお勧めします)