[](https://php.package.health/packages/innmind/immutable/3.3.1)
No required dependencies.
3 total, 3 outdated
| Package | Required | Latest | Status | |
|---|---|---|---|---|
| innmind/black-box | Test library | ^4.0 | 5.7.0 | outdated |
| phpunit/phpunit | The PHP Unit Testing framework. | ~8.0 | 11.3.6 | outdated |
| vimeo/psalm | A static analysis tool for finding errors in PHP applications | ~3.8 | 5.26.1 | outdated |