Review the following information for legacy documentation.

Documentation Archives

Documentation for Graylog versions 5.1 and earlier are no longer updated; however, you can still access versions 4.0-5.1 in our archives.

Warning: We strongly recommend you upgrade to the latest version of Graylog for the most up-to-date features, functionality, and security patches. See the current release documentation for details.

Version	Documentation
5.1	Graylog 5.1 Documentation Archive
5.0	Graylog 5.0 Documentation Archive
4.3	Graylog 4.3 Documentation Archive
4.2	Graylog 4.2 Documentation Archive
4.1	Graylog 4.1 Documentation Archive
4.0	Graylog 4.0 Documentation Archive

Documentation Prior to Version 4.0

For Graylog versions prior to 4.0, we recommend you review the official Graylog Changelogs for information regarding past releases.

Warning: We strongly recommend you upgrade to the latest version of Graylog for the most up-to-date features, functionality, and security patches. See the current release documentation for details.

Version	Changelogs
3.3	Graylog 3.3.0 Changelog
3.2	Graylog 3.2.0 Changelog
3.1	Graylog 3.1.0 Changelog
3.0	Graylog 3.0.0 Changelog
2.5	Graylog 2.5.0 Changelog
2.4	Graylog 2.4.0 Changelog
2.3	Graylog 2.3.0 Changelog
2.2	Graylog 2.2.0 Changelog
2.1	Graylog 2.1.0 Changelog
2.0	Graylog 2.0.0 Changelog
1.3	Graylog 1.3.0 Changelog
1.2	Graylog 1.2.0 Changelog
1.1	Graylog 1.1.0 Changelog
1.0	Graylog 1.0.0 Changelog