To allow for innovation and keep customer data safe and secure, Slack updates its system requirements every six months in March and September. Read on to learn about our support lifecycle policy and see a list of operating system (OS), app and browser versions that have recently reached or will soon reach the end of support. If you're using any of the versions listed, upgrade to continue using Slack.

Tip: To see which OS and browser versions we support, visit System requirements for using Slack. For information on retired Slack features, visit Slack feature retirements.

Support lifecycle policy

Slack supports app versions, browsers and OS for different periods of time, taking into account development cycles and our customers' needs:

OS, app version or browser	Length of support
Slack desktop and mobile apps	12–18 months from release
Browsers	12–18 months from release
Mac, Windows* and Linux	At least six months from the time that the manufacturer stops OS support
iOS	2.5–3 years from release
Android	4.5–5 years from release

*The support cycle for Windows follows Microsoft’s Enterprise lifecycle schedule, excluding support for LTSC/LTSB.

Note: To keep Slack current in the rapidly evolving market, support lifecycles are subject to change at the sole discretion of Slack, with or without advance notice.

Desktop support lifecycle schedule

Operating systems (OS)

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
4.19.3 and below	1st September 2022
4.13.0 and below	1st March 2022

When a Slack desktop app version is no longer supported, you’ll receive a notification prompting you to upgrade your app version to continue using Slack.

Mobile support lifecycle schedule

Operating systems (OS)

If you’re using iOS 12 or below or Android 7 or below, you’ll need to upgrade to a supported version to continue using Slack. If you’re using iOS 13 or above or Android 8 or above, 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 or Google Play Store.

Slack app versions

When a Slack mobile app version is no longer supported, you’ll receive a notification prompting you to upgrade your app version to continue using Slack.

Browser support lifecycle schedule

Browser version	End of support
Chrome 89 and below	1st September 2022
Firefox 87 and below	1st September 2022
Edge 89 and below	1st September 2022
Safari 14.0.3 and below	1st March 2022
Chrome 88 and below	1st March 2022
Firefox 86 and below	1st March 2022
Edge 88 and below	1st March 2022
Internet Explorer 11*	1st March 2022

*As of July 2019, you can't use Slack from Internet Explorer 11, but you can still sign in and manage your workspace settings from this browser until March 2022.

When a web browser is no longer supported, you'll be blocked from using Slack in the browser, signing in, creating new workspaces and managing settings for your workspace or Enterprise Grid organisation. You can continue these activities by upgrading to a supported browser.