We'd like to update our previous announcement regarding classic app deprecation. We're pushing the deprecation date for classic apps to November 16, 2026.
We want to update you about our previous announcement regarding support for classic apps. After much consideration and feedback, we have decided to push back the deprecation date to May 25, 2026.
Retiring of api.slack.com: as previously announced, the Slack platform and developer tools documentation are moving: the Slack platform documentation is now in beta on docs.slack.dev, and the developer tools documentation has moved to its new home on tools.slack.dev. Our next step is to sunset the old documentation experience on api.slack.com, and we plan to do so by the end of June 2025. In the meantime, you may want to update any bookmarks you have pointing to api.slack.com—but not to worry, we'll have redirects in place to make sure you end up right where you need to be!
We want to update you about our previous announcement regarding support for the files.upload API method. After much consideration and feedback, we have decided to push back the deprecation date to November 12, 2025.
We previously mentioned that we had deprecated the deno command and removed its listing from the help command. We have now removed the deno command completely. Developers who were depending on this command should now use the deno executable directly. We've also removed support for the deprecated, pre-release Deno Slack SDK versions that used slack.yaml and project.ts files. The Run-on-Slack platform no longer supports the slack.yaml file format, and no production projects should be affected. The project.ts file was deprecated by the Deno Slack SDK in favor of manifest.ts and manifest.json files.
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.
We want to let you know about some upcoming changes to support for legacy custom bots and classic apps on the Slack platform. Beginning March 31, 2025, we will discontinue support for legacy custom bots. For your integrations to continue working, you must create brand new Slack apps. In September 2025 March 2026, November 2026 we will discontinue support for classic apps. For your apps to continue working, you will need to migrate them to Slack apps. Any custom bots or classic apps you have built will no longer work after these dates. Refer to this changelog article for more details.
Our Web API method files.upload is now deprecated and will retire on March 11, 2025. Learn how to use our new asynchronous upload flow and migrate your apps and integrations.