As the first release of 2021 I present you a bugfix release that fixes two small bugs that were identified in 1.5.x and which turned out to cause a significant amount of support overhead over the past couple of weeks.

Accordingly, the changelog is very short and only consists of these entries:

  • #3849 - Fix plugin install errors (e.g. due to undervoltage) not being properly reported to the client.
  • #3886 - Fix handling of 404 errors upon plugin install

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 💕


The heads-ups from 1.5.0 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.


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

A special Thank you! to these fine people for their PRs:

Further Information

It may take up to 24h for your update 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 you get an error about "no suitable distribution" during update, please read this.

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