Firefox
Menu

Firefox ESR
Release Notes

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.

153.2.0 Firefox ESR

September 1, 2026

Version 153.2.0, first offered to ESR channel users on September 1, 2026

Firefox 153 Extended Support Release (ESR) includes all of the enhancements since Firefox 140, along with many new features to make your enterprise deployments easier and even more flexible.

Fixed

Developer

Get the most recent version

Need help or want to leave feedback?

File a bug Leave feedback

Get Involved

Did you know that most of the content in Firefox Support was written by volunteers?

Find out more

Other Resources

Developer Information Complete list of changes for this release Press Kit Mozilla and Firefox News Firefox Extended Support Release All Firefox for Desktop Releases Learn more about Firefox