CARGO-UPDATE(1) User Commands CARGO-UPDATE(1)

NAME

cargo-update -- Update dependencies as recorded in the local lock
file

SYNOPSIS

cargo update [options] spec

DESCRIPTION

This command will update dependencies in the Cargo.lock file to the
latest version. If the Cargo.lock file does not exist, it will be
created with the latest available versions.

OPTIONS

Update Options

spec<?>
Update only the specified packages. This flag may be specified
multiple times. See cargo-pkgid(1) for the SPEC format.

If packages are specified with spec, then a conservative update
of the lockfile will be performed. This means that only the
dependency specified by SPEC will be updated. Its transitive
dependencies will be updated only if SPEC cannot be updated
without updating dependencies. All other dependencies will
remain locked at their currently recorded versions.

If spec is not specified, all dependencies are updated.

--recursive
When used with spec, dependencies of spec are forced to update as
well. Cannot be used with --precise.

--precise precise
When used with spec, allows you to specify a specific version
number to set the package to. If the package comes from a git
repository, this can be a git revision (such as a SHA hash or
tag).

While not recommended, you can specify a yanked version of a
package. When possible, try other non-yanked SemVer-compatible
versions or seek help from the maintainers of the package.

A compatible pre-release version can also be specified even when
the version requirement in Cargo.toml doesn't contain any
pre-release identifier (nightly only).

--breaking directory
Update spec to latest SemVer-breaking version.

Version requirements will be modified to allow this update.

This only applies to dependencies when

+o The package is a dependency of a workspace member

+o The dependency is not renamed

+o A SemVer-incompatible version is available

+o The "SemVer operator" is used (^ which is the default)

This option is unstable and available only on the nightly channel
<https://doc.rust-lang.org/book/appendix-07-nightly-rust.html>
and requires the -Z unstable-options flag to enable. See
<https://github.com/rust-lang/cargo/issues/12425> for more
information.

-w, --workspace
Attempt to update only packages defined in the workspace. Other
packages are updated only if they don't already exist in the
lockfile. This option is useful for updating Cargo.lock after
you've changed version numbers in Cargo.toml.

--dry-run
Displays what would be updated, but doesn't actually write the
lockfile.

Display Options

-v, --verbose
Use verbose output. May be specified twice for "very verbose"
output which includes extra output such as dependency warnings
and build script output. May also be specified with the
term.verbose config value
<https://doc.rust-lang.org/cargo/reference/config.html>.

-q, --quiet
Do not print cargo log messages. May also be specified with the
term.quiet config value
<https://doc.rust-lang.org/cargo/reference/config.html>.

--color when
Control when colored output is used. Valid values:

+o auto (default): Automatically detect if color support is
available on the terminal.

+o always: Always display colors.

+o never: Never display colors.

May also be specified with the term.color config value
<https://doc.rust-lang.org/cargo/reference/config.html>.

Manifest Options

--manifest-path path
Path to the Cargo.toml file. By default, Cargo searches for the
Cargo.toml file in the current directory or any parent directory.

--ignore-rust-version
Ignore rust-version specification in packages.

--locked
Asserts that the exact same dependencies and versions are used as
when the existing Cargo.lock file was originally generated. Cargo
will exit with an error when either of the following scenarios
arises:

+o The lock file is missing.

+o Cargo attempted to change the lock file due to a different
dependency resolution.

It may be used in environments where deterministic builds are
desired, such as in CI pipelines.

--offline
Prevents Cargo from accessing the network for any reason. Without
this flag, Cargo will stop with an error if it needs to access
the network and the network is not available. With this flag,
Cargo will attempt to proceed without the network if possible.

Beware that this may result in different dependency resolution
than online mode. Cargo will restrict itself to crates that are
downloaded locally, even if there might be a newer version as
indicated in the local copy of the index. See the cargo-fetch(1)
command to download dependencies before going offline.

May also be specified with the net.offline config value
<https://doc.rust-lang.org/cargo/reference/config.html>.

--frozen
Equivalent to specifying both --locked and --offline.

--lockfile-path PATH
Changes the path of the lockfile from the default
(<workspace_root>/Cargo.lock) to PATH. PATH must end with
Cargo.lock (e.g. --lockfile-path
/tmp/temporary-lockfile/Cargo.lock). Note that providing
--lockfile-path will ignore existing lockfile at the default
path, and instead will either use the lockfile from PATH, or
write a new lockfile into the provided PATH if it doesn't exist.
This flag can be used to run most commands in read-only
directories, writing lockfile into the provided PATH.

This option is only available on the nightly channel
<https://doc.rust-lang.org/book/appendix-07-nightly-rust.html>
and requires the -Z unstable-options flag to enable (see #14421
<https://github.com/rust-lang/cargo/issues/14421>).

Common Options

+toolchain
If Cargo has been installed with rustup, and the first argument
to cargo begins with +, it will be interpreted as a rustup
toolchain name (such as +stable or +nightly). See the rustup
documentation <https://rust-lang.github.io/rustup/overrides.html>
for more information about how toolchain overrides work.

--config KEY=VALUE or PATH
Overrides a Cargo configuration value. The argument should be in
TOML syntax of KEY=VALUE, or provided as a path to an extra
configuration file. This flag may be specified multiple times.
See the command-line overrides section
<https://doc.rust-lang.org/cargo/reference/config.html#command-line-overrides>
for more information.

-C PATH
Changes the current working directory before executing any
specified operations. This affects things like where cargo looks
by default for the project manifest (Cargo.toml), as well as the
directories searched for discovering .cargo/config.toml, for
example. This option must appear before the command name, for
example cargo -C path/to/my-project build.

This option is only available on the nightly channel
<https://doc.rust-lang.org/book/appendix-07-nightly-rust.html>
and requires the -Z unstable-options flag to enable (see #10098
<https://github.com/rust-lang/cargo/issues/10098>).

-h, --help
Prints help information.

-Z flag
Unstable (nightly-only) flags to Cargo. Run cargo -Z help for
details.

ENVIRONMENT

See the reference
<https://doc.rust-lang.org/cargo/reference/environment-variables.html>
for details on environment variables that Cargo reads.

EXIT STATUS

+o 0: Cargo succeeded.

+o 101: Cargo failed to complete.

EXAMPLES

1. Update all dependencies in the lockfile:

cargo update

2. Update only specific dependencies:

cargo update foo bar

3. Set a specific dependency to a specific version:

cargo update foo --precise 1.2.3

SEE ALSO

cargo(1), cargo-generate-lockfile(1)

CARGO-UPDATE(1)