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Public Radar/Slack/Slack: Imminent Sunset/Deprecation Notice (March 31, 2026)
URGENT BREAKINGSlack

Slack: Imminent Sunset/Deprecation Notice (March 31, 2026)

We want to update you about our previous announcement regarding support for legacy custom bots and classic apps. After much consideration and feedback, we have decided to push back the deprecation date for classic apps by 6 months: we will now discontinue support for them on March 31, 2026. Nothing will change for legacy custom bots, of which the original deprecation date was March 31, 2025.
What to test in your app:
Locate usages of Important notice: An update for Slack Apps and complete migration prior to March 31, 2026.
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Released: 2024-11-07 08:00 UTC
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Slack: Imminent Sunset/Deprecation Notice (March 31, 2026) — Slack API Radar | Deprecast