Release - v4.2.0 New release published by edgarrmondragon v4.2.0 (2026-04-10) • Docker Hub :whale2: • PyPI :snake: Highlights • This restores the

latest*

tags on Docker Hub, which inadvertently were reverted to use Meltano v3 with the v3.9.2 release and now run on v4 again. • Miscellaneous improvements to the State Backend interface. --- ✨ New • #9948 Create

.gitignore

automatically in the

.meltano

directory • #9946 Avoid setting a global

UV_NO_CACHE=1

in the Docker image • #9901 Add

CACHEDIR.TAG

file automatically to

.meltano

directory • #9849 Show required setting indicators in

meltano config list

-- Thanks @mahangu! • #9843 Print stderr from extractor's discover call at default log level -- Thanks @mahangu! • #9822 Added

StateStoreManager.migrate()

interface which state backend implementations can override to provide a state migration mechanism • #9819 Make

StateStoreManager

a context manager with a default no-op

.close()

method 🐛 Fixes • #9949 Avoid emitting an

Unknown setting ...

warning when setting a nested "extra" setting like

_metadata.*.replication-method

• #9922 Do not swallow state backend persistence errors in BookmarkWriter -- Thanks @awohletz-pm! • #9921 Update the type annotation of

retry_seconds

in the state backend

acquire_lock

method to allow

float

values • #9877 Add warning when using ephemeral state ID in el/elt commands -- Thanks @stbiadmin! • #9858 Do not disable existing loggers when passing logging configuration to SDK-based plugins • #9825 Drop

None

values coming from

.env

-- Thanks @RamiNoodle733! • #9804 Make

meltano state set --input-file ...

work with click 8.1 ⚙️ Under the Hood • #9936 Updated some plugin-related types • #9909 Centralize virtualenv management into a new

VirtualEnvService

and delegate to

VenvBackend

implementations • Move logging frame number to constants

_FRAMES_DEBUG

and

_FRAMES_DEFAULT

• #9883 Use

ProjectDirsService

in all remaining places • #9880 Ensure custom

click.ParamType

implementations correctly override their parent methods • #9879 Added

reason

keyword argument to

PluginInstaller

callable protocol • #9870 Add more type-annotations for

SettingDefinition

attributes • #9841 Use

Project.dirs

API in more places • #9840 Use the

--clear

flag of virtualenv and uv to recreate the venv instead of removing it preemptively • #9817 Bump Ruff to 0.15 and update code to the 2026 style guide 📚 Documentation Improvements • #9939 Fixed some broken links in the

environments

page • #9906 Added examples for overriding key-properties and replication-key in metadata -- Thanks @alexchenai! • #9908 Update our AI guidelines • Hide video links since they are no longer available • #9868 Use uv in the "complete tutorial" • #9860 Add architecture diagram to docs home page • #9855 Fix broken image link. • #9856 Fix copyright and images in footer • #9468 Updated

production.md

to reflect it is not possible to set Airflow's

core.executor

configuration value with

meltano config set

-- Thanks @Rodeoclash! • #9839 Add a section about AI coding agents to the contribution guide • #9833 Fix typo 'the the' -> 'the' in manifest.py docstring -- Thanks @RamiNoodle733! • #9827 Fix typos in DataHub tutorial documentation -- Thanks @RamiNoodle733! 📦 Packaging changes • #9887 Allow virtualenv 21 • #9854 Require click 8.2.0+ • #9823 Remove upper constraint for uv dependency • #9806 Bump upper constraint for boto3 in the S3 state backend extension meltano/meltano