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Release Notes tell you what’s new in Firefox. As always, we welcome your feedback. You can also file a bug in Bugzilla or see the system requirements of this release.

139.0.4 Firefox Release

June 10, 2025

Version 139.0.4, first offered to Release channel users on June 10, 2025

Fixed

  • Fixed Firefox freezing when switching between apps or opening certain panels within the browser. (Bug 1969253 & Bug 1969346)

  • Fixed difficult selection of drop-down menu options in the Firefox preferences page when selected via the in-page search. (Bug 1968949)

  • Fixed various selection issues when triple-clicking text in some situations. (Bug 1969100 & Bug 1969432)

  • Fixed an incorrect filename being used when setting an image as the desktop wallpaper on Windows. (Bug 1969793)

  • Various security fixes.

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