English Arabic
[[!meta title="Tails 4.21 is out"]]
[[!meta date="Tue, 10 Aug 2021 12:34:56 +0000"]]
[[!tag announce]]
<h1 id="changes">Changes and updates</h1>
- Update *Tor Browser* to [10.5.4](https://blog.torproject.org/new-release-tor-browser-1054).
- Update *Thunderbird* to [78.12](https://www.thunderbird.net/en-US/thunderbird/78.12.0/releasenotes/)
<h1 id="fixes">Fixed problems</h1>
Prevent *Tails Installer* from deleting a Persistent Storage when doing a manual upgrade and choosing **Cancel** in the confirmation dialog. ([[!tails_ticket 18494]])
For more details, read our [[!tails_gitweb debian/changelog desc="changelog"]].
<h1 id="issues">Known issues</h1>
None specific to this release.
See the list of [[long-standing issues|support/known_issues]].
<h1 id="get">Get Tails 4.21</h1>
To upgrade your Tails USB stick and keep your persistent storage
- Automatic upgrades are available from Tails 4.19 or later to 4.21.
If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a [[manual upgrade|doc/upgrade/#manual]].
To install Tails on a new USB stick
Follow our installation instructions:
[[Install from Windows|install/windows]]
[[Install from macOS|install/mac]]