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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.

139.0.1 Firefox Release

May 29, 2025

Version 139.0.1, first offered to Release channel users on May 29, 2025

Fixed

  • Fixed graphics corruption with certain NVIDIA graphics adapters and multiple monitors running at mixed refresh rates after updating to Firefox 139. (Bug 1968876)

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