Legacy TLS Upgrades

On February 19, 2020, Slack will end support for TLS versions 1.0 and 1.1. You must update your apps before February 19, 2020. If you don’t update your apps to use TLS 1.2, requests sent to any Slack endpoint will fail after that date. You can use this lookup tool to identify any apps that still need to be updated to use TLS 1.2.

Please note that we are using a rolling window of 30 days to identify traffic from your apps that are using TLS 1.0 and 1.1. The list below will be updated every day.

To learn more about TLS, visit our Help Center. If your apps are affected by this change, learn how to update them from the API Changelog. If you have questions, please contact our Support team.

You'll need to sign in to your Slack account to view your legacy TLS protocol usage.

Last updated on: December 8th, 2019