I was hoping to make 1.9.0 the first release of this year, but instead here’s a hotfix for you all, made necessary by a breaking update of a third party dependency. This seventh bugfix release for 1.8.0 also adds compatibility with Python 3.11:

✨ Improvements

  • #4488 - Add support for Python 3.11 by bumping up the version of a dependency.

🐛 Bug fixes

  • #4744 - Do not send None to Locale.parse if no match can be made between the request’s accepted languages and the installed languages. Fixes a 500 server error on the API in case of Babel being at a version of 2.12 or higher.

You can also take a look at the changelog on GitHub, but it’s really short this time.

Like every single release (and release candidate) of OctoPrint ever since early 2016 this release was made possible only through your continued support of my work 💕

Issues while updating?

On every new OctoPrint release we see some people run into the same issues with outdated or broken environments all over again. If you encounter a problem during update, please check this collection of the most common issues encountered over the past couple of release cycles first, and test if the included fixes solve your problem.


The heads-ups from 1.8.0 still apply, please read them carefully, they might impact you and how you use OctoPrint! Also see the Further Information and Links below for more information, where to find help and how to roll back.

The following heads-ups from earlier releases also still apply:


Thanks to everyone who contributed to this bugfix release and provided full, analyzable bug reports, suggestions and feedback!

A special Thank You! to this fine person for their PRs!

Further Information

If connected to the internet, OctoPrint will allow you to apply this update automatically via an update notification. It may take up to 24h for this notification to pop up, so don't be alarmed if it doesn't show up immediately after reading this. You can force the update however via Settings > Software Update > Advanced options > Force check for update.

If your update fails chances are high you are running into one of the common update issues listed with fixes here, so please go through that FAQ entry first.

If you have any problems with your OctoPrint installation, please seek support on the community forum.