# `mix deps.update`
[🔗](https://github.com/elixir-lang/elixir/blob/7ff272706afc522e74121493b7166719985cb099/lib/mix/lib/mix/tasks/deps.update.ex#L5)

Updates the given dependencies.

The given dependencies and the projects they depend on will
be unlocked and updated to the latest version according to their
version requirements.

Since this is a destructive action, updating all dependencies
only occurs when the `--all` command line option is passed.

All dependencies are automatically recompiled after update.

## mix deps.unlock + mix deps.get

Upgrading a dependency often requires the projects it depends on
to upgrade too. If you would rather update a single dependency and
not touch its children, you can explicitly unlock the single dependency
and run `mix deps.get`:

    $ mix deps.unlock some_dep
    $ mix deps.get

## Command line options

  * `--all` - updates all dependencies
  * `--only` - only fetches dependencies for given environment
  * `--target` - only fetches dependencies for given target
  * `--no-archives-check` - does not check archives before fetching deps

---

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