Now Available: Meltano v1.54.0

Today, we are excited to release Meltano version 1.54.0, which (among other things) ensures arbitrary environment variables defined in .env are passed to invoked plugins, recreates plugin virtual environments when running meltano install to make sure the latest versions of dependencies are installed, and bumps the Airflow version to 1.10.12.

Special thanks go out to Niall Woodward of for contributing these last two changes!

Excited to try it out?

To upgrade Meltano and your Meltano project to the latest version, navigate to your project directory, activate the appropriate virtual environment, and run meltano upgrade. This will upgrade the meltano package and apply any necessary changes to your project.

What else is new?

The list below (copied from the changelog) covers all of the changes made to Meltano since the release of v1.53.0 on October 6:


  • #2057 Bump Airflow version to 1.10.12
  • #2224 Delete (if present) and recreate virtual environments for all plugins when running meltano install.


  • #2334 Omit keys for settings with null values from config.json files generated for taps and targets, to support plugins that check if a config key is present instead of checking if the value is non-null.
  • #2376 Fix meltano elt ... --transform={run,only} raising PluginMissingError when a default transform for the extractor is discoverable but not installed
  • #2377 Ensure arbitrary env vars defined in .env are passed to invoked plugins


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