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Arrow 0.11.0 is now available

Arrow 0.11.0 is now available

Arrow 0.11.0 is now available! This release includes many bug fixes and improvements to the Arrow ecosystem.

If you’re new to Arrow, it’s a group of open-source libraries that empower pure functional programming in Kotlin.

Version Highlights

  • This release adds support for Kotlin 1.4.0.

  • New modules have been added:
    • arrow-fx-coroutines
    • arrow-fx-coroutines-kotlinx-coroutines
    • arrow-continuations
    • arrow-check
    • arrow-core-retrofit
  • A BOM file has been added to improve the build configuration.

  • This version includes new deprecations and removals, so we’re writing guidelines for migration beyond the documentation that can be found on the website.

What’s Next? Version 1.0.0 is on the horizon! That’ll be the next release.

For a full list of changes and features in 0.11.0, please visit the official changelog.

We would like to give special thanks to the following contributors for this version (in no particular order):

For a full list of the contributors who have helped Arrow get to where it is today, please check out: Arrow Contributors. We’re always looking for additional help; please view the guidelines for contributing and take a look at the help-wanted issues. All levels are welcome, and we offer 1:1 mentoring through Arrow’s Slack and Gitter channels.

If you would like to support Arrow, but don’t have the time to invest in contributing, consider picking up some Arrow swag! All proceeds are invested back into advancing the library.


The active development of Arrow is proudly sponsored by 47 Degrees, a Functional Programming consultancy with a focus on the Kotlin, Scala, Haskell, and Swift programming languages.

Need Help with your projects?

47 Degrees offers the following services around Kotlin and Arrow:


If you’re interested in hearing how Kotlin and Arrow can transform your technology stack, learn more about our consulting engagements.


Our team is pleased to offer many comprehensive online training courses (as well as on-site once the world is safe again), as well as customized opportunities to ramp up your team. View our training opportunities.

Arrow Support:

Our team is comprised of many of the creators and maintainers of the Arrow library. We’re pleased to be able to offer commercial support with the integration and maintenance of Arrow in your technology stack.

If you’re interested in learning more about any of our services, reach out, and we’ll be happy to discuss how we can help with your project or needs.

Ensure the success of your project

47 Degrees can work with you to help manage the risks of technology evolution, develop a team of top-tier engaged developers, improve productivity, lower maintenance cost, increase hardware utilization, and improve product quality; all while using the best technologies.