Release 2026.01

Announcements
1

Dear RIOTers,

I’m happy to announce RIOT 2026.01 “GroundhogLoop” has just been released! :tada: :balloon:

Here are some highlights of the release:

  • You can hack with RIOT on some new hardware! We now support yet another ESP32-C3-based board: The Seeed Studio Xiao ESP32-C3 with WiFi and Bluetooth capabilities, and a tiny form factor (#21829). RIOT can now also drive the GP8XXX family of voltage and current DACs (#21182), as well as the PMW3901 and PAA5100JE optical flow sensors (#21856).

  • RIOT developers now have a better way to interact with the system time via the walltime module (#21343). This enables writing applications independently of the RTC peripheral, as well as subscribing to time changes. Check out the module documentation.

  • RIOT’s build system now allows modules that use event threads to declare special stack size requirements without conflicting with other modules (#21941). For details on how to use this for your modules, visit the documentation page.

  • When accessing crypto primitives via the PSA API, monocypher’s Ed25519 is now the default software backend, providing a much faster implementation out of the box (#21821).

  • Given the success and steady growth of our new guide site, it can now be accessed directly via https://doc.riot-os.org/, while RIOT’s API documentation (Doxygen) is still available at https://api.riot-os.org/ (#21968).

  • Nanocoap has undergone some work to decouple its API from UDP, with the ultimate goal of easily supporting other transports in the future. Make sure to check the latest version of the documentation, as some breaking changes have been made (#20900).

135 pull requests, composed of 250 commits, have been merged since the last release, and 6 issues have been solved. 28 people contributed with code in 64 days. 1551 files have been touched with 15841 (+) insertions and 11952 deletions (-).

You can download the RIOT release from Github by cloning the repository

and checkout the release tag or by downloading the tarball, and look up the release notes for further details.

A big thank you to everybody who contributed!

Cheers, Leandro

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