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, in March and September. This article contains the most up-to-date information on upcoming deprecations and a full record of past deprecations. If you're using any of the versions listed below, upgrade to continue using Slack.

Tip: To see which OS and browser versions we support, visit System 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 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
4.13.0 and below	March 1, 2022
4.8.0 and below	Sept. 1, 2021

Mobile deprecations

Operating systems (OS)

Slack app versions

Browser deprecations

Browser version	End of support
Safari 14.0.3 and below	March 1, 2022
Chrome 88 and below	March 1, 2022
Firefox 86 and below	March 1, 2022
Edge 88 and below	March 1, 2022
Internet Explorer 11*	March 1, 2022
Safari 13.1.2	Sept. 1, 2021
Chrome 82	Sept. 1, 2021
Firefox 77	Sept. 1, 2021
Edge 83	Sept. 1, 2021

*As of July, 2019, customers cannot use Slack from Internet Explorer 11, but they can still sign in and manage their workspace settings from this browser until March 2022.