# Stable release 0.4.9.5
**URL:** https://forum.torproject.org/t/stable-release-0-4-9-5/21227
**Category:** Tor Release Announcement
**Tags:** tor
**Created:** [February 12, 2026, 10:09pm UTC](https://forum.torproject.org/t/stable-release-0-4-9-5/21227 "2026-02-12T22:09:17Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@dgoulet](https://forum.torproject.org/u/dgoulet)
#### Post date: [February 12, 2026, 10:09pm UTC](https://forum.torproject.org/t/stable-release-0-4-9-5/21227/1 "2026-02-12T22:09:18Z")
# Where to Download
- [Tarballs](https://dist.torproject.org/)
- [Gitlab Repository](https://gitlab.torproject.org/tpo/core/tor)
- [Bug Report](https://gitlab.torproject.org/tpo/core/tor/-/issues/new)
# Changes
Below are the major changes of the released versions and links to more detailed release notes.
## Stable
Today we are releasing **0.4.9.5** , the first **stable** version of the 0.4.9.x series. Among many changes, here are the two major features:
#### Counter Galois Onion
Clients and relays can now negotiate Counter Galois Onion (CGO) relay cryptography. It provides improved resistance to several types of tagging attacks, as well as better forward secrecy and stronger protection against forgery.
The implemented Tor proposal is [359](https://spec.torproject.org/proposals/359-cgo-redux.html).
#### Happy Families
With this feature, relays in a family share a secret “family key” that they use to prove their membership in the family. Once the network has migrated, this will reduce the size of microdescriptor downloads by about 80%, resulting in a significant reduction in bandwidth usage.
The implemented Tor proposal is [321](https://spec.torproject.org/proposals/321-happy-families.html).
### Final word
The Debian package is now available at [https://deb.torproject.org](https://deb.torproject.org). As always, please upgrade as soon as possible.
See the release notes below for the full list of bug fixes and features included in this new stable series.
As usual, many thanks to our beloved relay operators and to everyone else who makes this possible! 🙂
#### Release Notes
- [0.4.9.x](https://gitlab.torproject.org/tpo/core/tor/-/raw/release-0.4.9/ReleaseNotes)
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### Author:  [@atari](https://forum.torproject.org/u/atari)
#### Post date: [February 24, 2026, 12:25pm UTC](https://forum.torproject.org/t/stable-release-0-4-9-5/21227/2 "2026-02-24T12:25:33Z")
There is also a Debian sid package now, which seems to work with trixie:
> **[Client Challenge](https://packages.debian.org/sid/tor)**
thx @lavamind ❤
🧅