Slack's deprecation schedule

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 the first business days of March and September. If you're using any of the versions listed below, upgrade to continue using Slack.

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


Desktop deprecations

Here is the most up-to-date information on upcoming deprecations and a full record of past deprecations.

Operating systems (OS)

Mac

Windows

Linux

OS version End of support
10.13 Sept. 1, 2021
10.12 Sept. 1, 2021
10.11 Sept. 1, 2021
10.10 Mar. 1, 2021

Note: Windows OS deprecations include LTSB/LTSC versions.

OS version End of support
Windows Server
Version 2008 R2
Sept. 1, 2021
Windows Server
Version 2008
Sept. 1, 2021
Windows 10
Version 1903
Sept. 1, 2021
Windows 10
Version 1709
Sept. 1, 2021
Windows 10
Version 1703
Sept. 1, 2021
Windows 10
Version 1607
Sept. 1, 2021
Windows 10
Version 1511
Sept. 1, 2021
Windows 10
Version 1507
Sept. 1, 2021
Windows 7 Mar. 1, 2021
OS version End of support
Ubuntu 16.04 Sept. 1, 2021
Ubuntu 14.04 Sept. 1, 2021
Fedora 31 Sept. 1, 2021

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
4.8.0 Sept. 1, 2021
4.7.0 Sept. 1, 2021
4.6.0 Sept. 1, 2021
4.5.1 Sept. 1, 2021
4.5.0 Sept. 1, 2021
4.4.2 Sept. 1, 2021
4.4.0 Sept. 1, 2021
4.3.4 Sept. 1, 2021
4.3.2 Sept. 1, 2021
4.3.0 Sept. 1, 2021
4.2.0 Sept. 1, 2021
4.1.2 Sept. 1, 2021
4.1.1 Sept. 1, 2021
4.1.0 Sept. 1, 2021
4.0.2 Sept. 1, 2021
4.0.1 Sept. 1, 2021
4.0.0
Sept. 1, 2021


Mobile deprecations

Operating systems (OS)

iOS

Android

OS version End of support
12 Sept. 1, 2021
OS version End of support
7 Sept. 1, 2021
6 Sept. 1, 2021


Slack app versions

iOS

Android

App version End of support
20.07.20 Sept. 1, 2021
20.07.10 Sept. 1, 2021
20.06.20 Sept. 1, 2021
20.06.10 Sept. 1, 2021
20.05.20 Sept. 1, 2021
20.05.10 Sept. 1, 2021
20.04.20 Sept. 1, 2021
20.04.10 Sept. 1, 2021
20.03.30 Sept. 1, 2021
20.03.20 Sept. 1, 2021
20.03.10 Sept. 1, 2021
20.02.20 Sept. 1, 2021
20.02.10 Sept. 1, 2021
20.01.20 Sept. 1, 2021
20.01.10 Sept. 1, 2021
19.12.10 Sept. 1, 2021
19.11.20 Sept. 1, 2021
19.11.10 Sept. 1, 2021
19.10.20 Sept. 1, 2021
19.10.10 Sept. 1, 2021
19.09.20 Sept. 1, 2021
19.09.10 Sept. 1, 2021
19.08.20 Sept. 1, 2021
19.08.10 Sept. 1, 2021
19.07.30 Sept. 1, 2021
19.07.20 Sept. 1, 2021
19.07.10 Sept. 1, 2021
19.06.20 Sept. 1, 2021
19.06.10 Sept. 1, 2021
19.5.2 Sept. 1, 2021
19.5.1 Sept. 1, 2021
19.4.2 Sept. 1, 2021
19.4.1 Sept. 1, 2021
19.3.2 Sept. 1, 2021
19.3.1 Sept. 1, 2021
19.2.2 Sept. 1, 2021
19.2.1 Sept. 1, 2021
3.61 Sept. 1, 2021
3.60 Sept. 1, 2021
3.59 Sept. 1, 2021
3.58 Sept. 1, 2021
3.57 Sept. 1, 2021
3.56 Sept. 1, 2021
3.55 Sept. 1, 2021
3.54 Sept. 1, 2021
3.53 Sept. 1, 2021
3.52 Sept. 1, 2021
3.51 Sept. 1, 2021
3.50 Sept. 1, 2021
3.49 Sept. 1, 2021
3.48 Sept. 1, 2021
3.47 Sept. 1, 2021
3.46 Sept. 1, 2021
3.45 Sept. 1, 2021
3.44 Sept. 1, 2021
3.43 Sept. 1, 2021
3.42 Sept. 1, 2021
3.41 Sept. 1, 2021
3.40 Sept. 1, 2021
3.39 Sept. 1, 2021
3.38 Sept. 1, 2021
3.37 Sept. 1, 2021
3.36 Sept. 1, 2021
3.35 Sept. 1, 2021
3.34 Sept. 1, 2021
3.33 Sept. 1, 2021
3.32.1 Sept. 1, 2021
3.32 Sept. 1, 2021
3.31 Sept. 1, 2021
3.30 Sept. 1, 2021
3.29 Sept. 1, 2021
3.28 Sept. 1, 2021
3.27 Sept. 1, 2021
3.26 Sept. 1, 2021
3.25 Sept. 1, 2021
3.24 Sept. 1, 2021
App version End of support
20.07.20 Sept. 1, 2021
20.07.10 Sept. 1, 2021
20.06.20 Sept. 1, 2021
20.06.10 Sept. 1, 2021
20.05.20 Sept. 1, 2021
20.05.10 Sept. 1, 2021
20.04.20 Sept. 1, 2021
20.04.10 Sept. 1, 2021
20.03.30 Sept. 1, 2021
20.03.20 Sept. 1, 2021
20.03.10 Sept. 1, 2021
20.02.20 Sept. 1, 2021
20.02.10 Sept. 1, 2021
20.01.20 Sept. 1, 2021
20.01.10 Sept. 1, 2021
2.47.1 Sept. 1, 2021
19.5.2 Sept. 1, 2021
19.5.1 Sept. 1, 2021
19.4.2 Sept. 1, 2021
19.4.1 Sept. 1, 2021
19.3.2 Sept. 1, 2021
19.3.1 Sept. 1, 2021
19.2.2 Sept. 1, 2021
19.2.1 Sept. 1, 2021
19.12.10 Sept. 1, 2021
19.11.20 Sept. 1, 2021
19.11.10 Sept. 1, 2021
19.10.20 Sept. 1, 2021
19.10.10 Sept. 1, 2021
19.09.20 Sept. 1, 2021
19.09.10 Sept. 1, 2021
19.08.20 Sept. 1, 2021
19.08.10 Sept. 1, 2021
19.07.30 Sept. 1, 2021
19.07.20 Sept. 1, 2021
19.07.10 Sept. 1, 2021
19.06.20 Sept. 1, 2021
19.06.10 Sept. 1, 2021
2.76 Sept. 1, 2021
2.75 Sept. 1, 2021
2.74 Sept. 1, 2021
2.73 Sept. 1, 2021
2.72 Sept. 1, 2021
2.71 Sept. 1, 2021
2.7 Sept. 1, 2021
2.69 Sept. 1, 2021
2.68 Sept. 1, 2021
2.67 Sept. 1, 2021
2.66 Sept. 1, 2021
2.65 Sept. 1, 2021
2.64 Sept. 1, 2021
2.63 Sept. 1, 2021
2.62 Sept. 1, 2021
2.61 Sept. 1, 2021
2.6 Sept. 1, 2021
2.59 Sept. 1, 2021
2.58 Sept. 1, 2021
2.57 Sept. 1, 2021
2.56 Sept. 1, 2021
2.55 Sept. 1, 2021
2.54 Sept. 1, 2021
2.53 Sept. 1, 2021
2.52 Sept. 1, 2021
2.51 Sept. 1, 2021
2.5 Sept. 1, 2021
2.49 Sept. 1, 2021
2.48 Sept. 1, 2021
2.47 Sept. 1, 2021
2.46 Sept. 1, 2021
2.45 Sept. 1, 2021
2.44 Sept. 1, 2021
2.43 Sept. 1, 2021
2.42 Sept. 1, 2021
2.41 Sept. 1, 2021
2.4 Sept. 1, 2021
2.39 Sept. 1, 2021


Browser deprecations

Browser version End of support
Safari 13.1.2
Sept. 1, 2021
Chrome 82 Sept. 1, 2021
Firefox 77 Sept. 1, 2021
Edge 83 Sept. 1, 2021
Internet Explorer 11* 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 August, 2021.