[](https://php.package.health/packages/innmind/immutable/2.9.1)
No required dependencies.
2 total, 2 outdated
| Package | Required | Latest | Status | |
|---|---|---|---|---|
| phpbench/phpbench | PHP Benchmarking Framework | ^0.14.0 | 1.3.1 | outdated |
| phpunit/phpunit | The PHP Unit Testing framework. | ~6.0 | 11.3.6 | outdated |