See what’s new in Firefox!

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.

140.0.1 Firefox Release

June 26, 2025

Version 140.0.1, first offered to Release channel users on June 26, 2025

Fixed

  • Fixed text contrast issues in the sidebar with some dark themes. (Bug 1971487)

  • Fixed a startup crash experienced by some users caused by DLL injection. (Bug 1973947)

All Firefox downloads