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Bump version


The version is bumped automatically based on the commits.

The commits should follow the rules of the committer to be parsed correctly.

It is possible to specify a prerelease (alpha, beta, release candidate) version.

The version can also be manually bumped.

The version format follows semantic versioning.


Increment Description Conventional commit map
MAJOR Breaking changes introduced BREAKING CHANGE
MINOR New features feat
PATCH Fixes fix + everything else

Prereleases are supported following python's PEP 0440

The scheme of this format is


Some examples:

1.0.0a0  # alpha
1.0.0b0  # beta
1.0.0rc0 # release candidate

post and dev releases are not supported yet.


$ cz bump --help
usage: cz bump [-h] [--dry-run] [--files-only] [--changelog] [--no-verify] [--local-version]
               [--yes] [--tag-format TAG_FORMAT] [--bump-message BUMP_MESSAGE]
               [--prerelease {alpha,beta,rc}]
               [--increment {MAJOR,MINOR,PATCH}] [--check-consistency] [--annotated-tag]

optional arguments:
  -h, --help            show this help message and exit
  --dry-run             show output to stdout, no commit, no modified files
  --files-only          bump version in the files from the config
  --changelog, -ch      generate the changelog for the newest version
  --no-verify           this option bypasses the pre-commit and commit-msg hooks
  --yes                 accept automatically questions done
  --local-version       bump the local portion of the version
  --tag-format TAG_FORMAT
                        the format used to tag the commit and read it, use it in existing projects, wrap
                        around simple quotes
  --bump-message BUMP_MESSAGE
                        template used to create the release commit, useful when working with CI
  --prerelease {alpha,beta,rc}, -pr {alpha,beta,rc}
                        choose type of prerelease
  --increment {MAJOR,MINOR,PATCH}
                        manually specify the desired increment
  --check-consistency, -cc
                        check consistency among versions defined in commitizen configuration and
  --annotated-tag, -at  create annotated tag instead of lightweight one


Bumps the version in the files defined in version_files without creating a commit and tag on the git repository,

cz bump --files-only


Generate a changelog along with the new version and tag when bumping.

cz bump --changelog


Check whether the versions defined in version_files and the version in commitizen configuration are consistent before bumping version.

cz bump --check-consistency

For example, if we have pyproject.toml

version = "1.21.0"
version_files = [


__version__ = "1.21.0"



If --check-consistency is used, commitizen will check whether the current version in pyproject.toml exists in all version_files and find out it does not exist in and fails. However, it will still update pyproject.toml and src/

To fix it, you'll first git checkout . to reset to the status before trying to bump and update the version in to 1.21.0


Bump the local portion of the version.

cz bump --local-version

For example, if we have pyproject.toml

version = "5.3.5+0.1.0"

If --local-version is used, it will bump only the local version 0.1.0 and keep the public version 5.3.5 intact, bumping to the version 5.3.5+0.2.0.


If --annotated-tag is used, commitizen will create annotated tags. Also available via configuration, in pyproject.toml or .cz.toml.


If --changelog-to-stdout is used, the incremental changelog generated by the bump will be sent to the stdout, and any other message generated by the bump will be sent to stderr.

If --changelog is not used with this command, it is still smart enough to understand that the user wants to create a changelog. It is recommened to be explicit and use --changelog (or the setting update_changelog_on_bump).

This command is useful to "transport" the newly created changelog. It can be sent to an auditing system, or to create a Github Release.


cz bump --changelog --changelog-to-stdout >



It is used to read the format from the git tags, and also to generate the tags.

Commitizen supports 2 types of formats, a simple and a more complex.

cz bump --tag-format="v$version"
cz bump --tag-format="v$minor.$major.$patch$prerelease"

In your pyproject.toml or .cz.toml

tag_format = "v$major.$minor.$patch$prerelease"

The variables must be preceded by a $ sign.

Supported variables:

Variable Description
$version full generated version
$major MAJOR increment
$minor MINOR increment
$patch PATCH increment
$prerelease Prerelase (alpha, beta, release candidate)

version_files *

It is used to identify the files which should be updated with the new version. It is also possible to provide a pattern for each file, separated by colons (:).

Commitizen will update it's configuration file automatically (pyproject.toml, .cz) when bumping, regarding if the file is present or not in version_files.

* Renamed from files to version_files.

Some examples

pyproject.toml or .cz.toml

version_files = [

In the example above, we can see the reference "". This means that it will find a file and will only make a change in a line containing the version substring.


Template used to specify the commit message generated when bumping.

defaults to: bump: version $current_version → $new_version

Variable Description
$current_version the version existing before bumping
$new_version version generated after bumping

Some examples

pyproject.toml or .cz.toml

bump_message = "release $current_version → $new_version [skip-ci]"


When set to true the changelog is always updated incrementally when running cz bump, so the user does not have to provide the --changelog flag every time.

defaults to: false

update_changelog_on_bump = true


When set to true commitizen will create annotated tags.

annotated_tag = true

Custom bump

Read the customizing section.