# [Tails 7.3.1](
https://tails.net/news/version_7.3.1/)
Today, we are releasing 7.3.1 instead of 7.3 because a security vulnerability
was fixed in a software library included in Tails while we were preparing 7.3.
We started the release process again to include this fix.
# Changes and updates
* Update _Tor Browser_ to [15.0.3](
https://blog.torproject.org/new-release-tor-browser-1503).
* Update the _Tor_ client to 0.4.8.21.
* Update _Thunderbird_ to [140.5.0](
https://www.thunderbird.net/en-US/thunderbird/140.5.0esr/releasenotes/).
For more details, read our
[changelog](
https://gitlab.tails.boum.org/tails/tails/-/blob/master/debian/changelog).
# Get Tails 7.3.1
## To upgrade your Tails USB stick and keep your Persistent Storage
* Automatic upgrades are available from Tails 7.0 or later to 7.3.1.
* If you cannot do an automatic upgrade or if Tails fails to start after an automatic upgrade, please try to do a [manual upgrade](
https://tails.net/doc/upgrade/index.en.html#manual).
## To install Tails 7.3.1 on a new USB stick
Follow our installation instructions:
* [Install from Windows](
https://tails.net/install/windows/index.en.html)
* [Install from macOS](
https://tails.net/install/mac/index.en.html)
* [Install from Linux](
https://tails.net/install/linux/index.en.html)
* [Install from Debian or Ubuntu using the command line and GnuPG](
https://tails.net/install/expert/index.en.html)
The Persistent Storage on the USB stick will be lost if you install instead of
upgrading.
## To download only
If you don't need installation or upgrade instructions, you can download Tails
7.3.1 directly:
* [For USB sticks (USB image)](
https://tails.net/install/download/index.en.html)
* [For DVDs and virtual machines (ISO image)](
https://tails.net/install/download-iso/index.en.html)
URL: <
https://tails.net/news/version_7.3.1/>
