To ensure we can deliver a consistent experience for our customers, Slack deprecates support for app versions, browsers, and operating systems (OS) every six months, on or around February 1st and August 1st. There will be a one-month grace period between end of support (when an app version, browser, or OS is no longer supported) and end of life (when it is deprecated completely). This article contains the most up-to-date information on upcoming deprecations, and a full record of past deprecations.

Tip: To see which OS and Slack app versions we currently support, visit Minimum requirements for using Slack.

Desktop deprecations

Operating systems (OS)

Note: If you’re using a Windows, Mac, or Linux OS that has reached end of support, you’ll still be able to access Slack as long as you’re using a supported app version, but you won’t receive automatic app updates. Slack won’t be available to download from the App Store, Microsoft Store, or Snap.

Slack app versions

App version	End of support	End of life
4.0.0	Aug. 1, 2021	Aug. 31, 2021
4.0.1	Aug. 1, 2021	Aug. 31, 2021
4.0.2	Aug. 1, 2021	Aug. 31, 2021
4.1.0	Aug. 1, 2021	Aug. 31, 2021
4.1.1	Aug. 1, 2021	Aug. 31, 2021
4.1.2	Aug. 1, 2021	Aug. 31, 2021
4.2.0	Aug. 1, 2021	Aug. 31, 2021
4.3.0	Aug. 1, 2021	Aug. 31, 2021
4.3.2	Aug. 1, 2021	Aug. 31, 2021
4.3.4	Aug. 1, 2021	Aug. 31, 2021
4.4.0	Aug. 1, 2021	Aug. 31, 2021
4.4.2	Aug. 1, 2021	Aug. 31, 2021
4.5.0	Aug. 1, 2021	Aug. 31, 2021
4.5.1	Aug. 1, 2021	Aug. 31, 2021
4.6.0	Aug. 1, 2021	Aug. 31, 2021
4.7.0	Aug. 1, 2021	Aug. 31, 2021
4.8.0	Aug. 1, 2021	Aug. 31, 2021

Mobile deprecations

Operating systems (OS)

Slack app versions

Browser deprecations

Browser version	End of support	End of life
Safari 13.1.2	Aug. 1, 2021	Aug. 31, 2021
Chrome 82	Aug. 1, 2021	Aug. 31, 2021
Firefox 77	Aug. 1, 2021	Aug. 31, 2021
Edge 83	Aug. 1, 2021	Aug. 31, 2021