# New Release: Tor Browser 15.0.4
**URL:** https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085
**Category:** News
**Tags:** tor-browser
**Created:** [January 13, 2026, 10:13am UTC](https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085 "2026-01-13T10:13:39Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@system](https://forum.torproject.org/u/system)
#### Post date: [January 13, 2026, 10:13am UTC](https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085/1 "2026-01-13T10:13:39Z")
by [ma1](https://blog.torproject.org/author/ma1) | January 13, 2026
Tor Browser 15.0.4 is now available from the [Tor Browser download page](https://www.torproject.org/download/) and also from our [distribution directory](https://www.torproject.org/dist/torbrowser/15.0.4/).
This version includes important [security updates](https://www.mozilla.org/en-US/security/advisories/) to Firefox.
## Send us your feedback
If you find a bug or have a suggestion for how we could improve this release, [please let us know](https://support.torproject.org/misc/bug-or-feedback/).
## Full changelog
The [full changelog](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/raw/maint-15.0/projects/browser/Bundle-Data/Docs-TBB/ChangeLog.txt) since Tor Browser 15.0.3 is:
- All Platforms
- [Bug tor-browser#44418](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44418): Update built-in obfs4 bridges
- [Bug tor-browser#44433](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44433): Weird §:domain.com label in the Blocked Objects window
- [Bug tor-browser#44470](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44470): Rebase Tor Browser stable onto 140.7.0esr
- [Bug tor-browser#44474](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44474): Backport Security Fixes from Firefox 147
- [Bug tor-browser#44482](https://gitlab.torproject.org/tpo/applications/tor-browser/-/issues/44482): (H1) Script execution in Safest mode via data URI navigation
- Windows + macOS + Linux
- Updated Firefox to 140.7.0esr
- Android
- Updated GeckoView to 140.7.0esr
- [Bug tor-browser-build#41681](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/41681): Keep public suffixes up-to-date on 140esr-based Tor Browser for Android
- Build System
- All Platforms
- [Bug tor-browser-build#41654](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/41654): Make relprep.py update Moat settings
- [Bug tor-browser-build#41682](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/41682): relprep.py should fail when a GitHub release is not found
- [Bug rbm#40090](https://gitlab.torproject.org/tpo/applications/rbm/-/issues/40090): Make the cleanup faster
- [Bug rbm#40095](https://gitlab.torproject.org/tpo/applications/rbm/-/issues/40095): cached checksums should not be used for input files when refresh\_input is enabled
- Android
- [Bug tor-browser-build#41679](https://gitlab.torproject.org/tpo/applications/tor-browser-build/-/issues/41679): Android tor-expert-bundle archives missing version in filename
* * *
This is a companion discussion topic for the original entry at [https://blog.torproject.org/new-release-tor-browser-1504](https://blog.torproject.org/new-release-tor-browser-1504)
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### Author:  [@ctorc](https://forum.torproject.org/u/ctorc)
#### Post date: [January 13, 2026, 11:42am UTC](https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085/2 "2026-01-13T11:42:52Z")
Update fails on 15.0.3 (linux)
From the “Update available” popup I get the message “Tor Browser couldn’t update automatically. Download the new version…”
From the Help → About menu I get the message “Update failed” right after the download starts, it stops suddenly at 0/7.5mb.
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### Author:  [@ebanam](https://forum.torproject.org/u/ebanam)
#### Post date: [January 13, 2026, 11:47am UTC](https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085/3 "2026-01-13T11:47:19Z")
@ctorc, please try again now.
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### Author:  [@ctorc](https://forum.torproject.org/u/ctorc)
#### Post date: [January 13, 2026, 1:51pm UTC](https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085/4 "2026-01-13T13:51:31Z")
Now it works, thanks.
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### Author:  [@muzammil2123](https://forum.torproject.org/u/muzammil2123)
#### Post date: [January 15, 2026, 1:13pm UTC](https://forum.torproject.org/t/new-release-tor-browser-15-0-4/21085/5 "2026-01-15T13:13:28Z")
Please try again now