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LTS Channel

Long Term Support (LTS) releases receive bugfixes and security updates for an extended period.

How to Install

Ember

# Install Ember 5.4.0:
npm install --save-dev ember-source@~5.4.0

Read the changelog for Ember 5.4.0.

What is an LTS release?

Once a release of Ember gets promoted to LTS, it receives bugfixes for 36 weeks and security updates for 54 weeks.

An LTS release is the best version to use if you won't be updating your app frequently, but want to help your app stay secure and working smoothly. Another reason to use an LTS is if you have a very large, complex app, since LTS versions get even more testing and scrutiny than usual.

An LTS is declared roughly every 4 minor versions, excluding the x.0 minor version. The last minor version before the next major release is also considered to be an LTS. For example, in Ember 2.x, the following versions were considered LTS's: 2.4, 2.8, 2.12, 2.16, and 2.18 (last version).

Before a version can be called an "LTS" release, it has to spend at least 6 weeks as a stable release, where it is used and tested by thousands of developers.

A complete release history for Ember is available on GitHub.

LTS schedule

Ember currently supports these LTS versions for Ember.js, Ember CLI, and Ember Data.

LTS version Promotion date Bugfixes until Security patches until
5.4 December 11, 2023 August 19, 2024 December 23, 2024
4.12 May 15, 2023 January 22, 2024 May 27, 2024

The following LTS versions are no longer maintained. The table shows their last minor release dates:

LTS version LTS promotion Bugfixes until Security patches until
4.8 December 8, 2022 July 6, 2023 December 21, 2023
4.4 July 13, 2022 February 8, 2023 July 26, 2023
3.28 December 20, 2021 July 18, 2022 January 2, 2023
3.24 February 25, 2021 September 23, 2021 March 10, 2022
3.20 September 2, 2020 March 31, 2021 September 15, 2021
3.16 March 16, 2020 October 12, 2020 March 29, 2021
3.12 September 25, 2019 April 22, 2020 October 7, 2020
3.8 April 10, 2019 November 6, 2019 April 22, 2020
3.4 October 15, 2018 May 13, 2019 October 28, 2019
2.18 February 14, 2018 September 12, 2018 February 27, 2019
2.16 November 20, 2017 June 18, 2018 December 3, 2018
2.12 April 29, 2017 November 25, 2017 May 12, 2018
2.8 October 17, 2016 May 15, 2017 October 30, 2017
2.4 April 11, 2016 November 7, 2016 April 24, 2017