[](https://php.package.health/packages/innmind/immutable/5.9.0)
No required dependencies.
3 total, all up-to-date
| Package | Required | Latest | Status | |
|---|---|---|---|---|
| innmind/black-box | Test library | ^5.5.1 | 5.7.0 | up to date |
| innmind/coding-standard | ~2.0 | 2.0.1 | up to date | |
| vimeo/psalm | A static analysis tool for finding errors in PHP applications | ~5.6 | 5.26.1 | up to date |