# Ubuntu project > This documentation provides guidance for contributors to and maintainers of the Ubuntu Linux distribution. It covers processes and concepts, as well as project governance and team workflows. There are instructions for packaging, merging, proposed migrations, autopkgtests, and many other procedures for maintaining the Ubuntu Archive and releasing the distribution. 2026 ## Pages in this subsection - [Stable Release Updates](https://documentation.ubuntu.com/project/SRU/howto.md): As a contributor, follow these guides to upload an SRU and to ensure that it works correctly. - [Introduction to SRU](https://documentation.ubuntu.com/project/SRU/howto/introduction-to-sru.md): To fix newly discovered bugs and make updates after the publication of an Ubuntu Stable Release, use... - [Perform a standard SRU](https://documentation.ubuntu.com/project/SRU/howto/standard.md): This how-to is for standard SRUs, where straightforward bugs are fixed - [Get an SRU released from proposed](https://documentation.ubuntu.com/project/SRU/howto/release.md): The Stable Release Updates team regularly checks for SRUs that have - [Prepare a special type of SRU](https://documentation.ubuntu.com/project/SRU/howto/prepare-special.md): 1. If your special type of SRU already has package-specific notes then follow How-to → - [Special types of SRU](https://documentation.ubuntu.com/project/SRU/howto/special.md): This section is for the special types of SRU listed at - [Check for common issues with your SRU](https://documentation.ubuntu.com/project/SRU/howto/common-issues.md): - Something in the submission is exceptional, unexpected or otherwise a - [Handle an autopkgtest failure](https://documentation.ubuntu.com/project/SRU/howto/autopkgtest-failure.md): See also: Explanation → Autopkgtest failures - [Investigate a halted phased update](https://documentation.ubuntu.com/project/SRU/howto/phasing.md): See also: Explanation → Phasing - [Handle a regression](https://documentation.ubuntu.com/project/SRU/howto/regression.md): If a package update introduces a regression which already made it - [Contact the SRU team](https://documentation.ubuntu.com/project/SRU/howto/contact.md): **Canonical employees**: private messages and private channels are ## Optional - [Top-level llms.txt](https://documentation.ubuntu.com/project/llms.txt): Complete documentation index.