New Release: Tor Browser 15.0.20

system · August 18, 2026, 10:26am

by ma1 | August 18, 2026

Tor Browser 15.0.20 is now available from the Tor Browser download page and also from our distribution directory.

This version includes important security updates 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.

Full changelog

The full changelog since Tor Browser 15.0.19 is:

All Platforms
- Bug tor-browser#45204: Rebase Tor Browser stable onto 140.14.0esr
- Bug tor-browser#45219: Backport Security Fixes from Firefox 154
Windows + macOS + Linux
- Updated Firefox to 140.14.0esr
Android
- Updated GeckoView to 140.14.0esr
Build System
- All Platforms
  - Bug tor-browser-build#41839: Backport tor-browser-build-browser#41831: Update libevent to 2.1.13
  - Bug tor-browser-build#41850: Update keyring/torbrowser.gpg for new subkey and updated expiration date of the main key
- Windows + Linux + Android
  - Updated Go to 1.25.13

This is a companion discussion topic for the original entry at https://blog.torproject.org/new-release-tor-browser-15020/

Prince73 · August 19, 2026, 12:49pm

Thanks for the update. It’s good to see the security fixes being included in this release, especially with the Firefox ESR update. I’ll make sure to update to 15.0.20 when I get the chance. The changelog is useful too, particularly the separate updates listed for Android and the desktop platforms.