# `mix archive.check`
[🔗](https://github.com/elixir-lang/elixir/blob/v1.20.5/lib/mix/lib/mix/tasks/archive.check.ex#L5)

Checks all archives are available.

Mix projects can specify required archives using
the `:archives` option:

    archives: [{:foo, "~> 1.0.0"}]

This task guarantees this option is respected.

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*Consult [api-reference.md](api-reference.md) for complete listing*