Devices / Makers & open firmware / Arduino CLI

Arduino CLI releases

Name: Arduino CLI
Author: Arduino

current

Arduino CLI is tracked under makers & open firmware. Its latest version, 1.5.1, shipped on Jun 5, 2026.

Latest version: 1.5.1
Released: Jun 5, 2026
Category: Makers & open firmware
Last checked: Nov 6, 2026

How to update Arduino CLI

Open update page ↗

Open the Arduino IDE, then Tools, then Board, then Boards Manager and update the core for your board.
For the UNO R4's connectivity firmware, use the Firmware Updater under Tools.
Keep the board connected by USB throughout.

Always install releases from the project itself. Firmwarely links out; it never hosts downloads.

What changed

Changelog: 92b5682a5 fix: gRPC Monitor call does not emit applied_settings response (#3191) eb15e205e Do not print stray "Running post-install/pre-uninstall script" messages (#3194) 10f119920 fix(compiler): Sketch may be wrongly considered up-to-date (-› not recompiled when needed) (#3206) fb6ba…

Release notes ↗

Version history

1.5.1

Jun 5, 2026

FAQ

What is the latest version of Arduino CLI?

Version 1.5.1, released Jun 5, 2026. This page is refreshed every hour from the project's release page.

How do I update Arduino CLI?

See the step-by-step above. Pull the new image or package and restart the service. Read the release notes and back up the data directory first; most projects can't downgrade once the database has migrated.

How does Firmwarely know when there's a new version?

Every hour we read the project's official release page for Arduino CLI and record the version, date and changelog. Subscribers watching it get an email when it changes: the next morning on Pro, in the Monday roundup on the free plan.

Is this an official Arduino page?

No. Firmwarely is independent. Project and product names belong to their owners; always install releases from the project's own source.