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Updates, changes, and improvements at Retool.

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Action Required: Update Slack queries using files.upload

As of March 12, 2025, this workaround is no longer required. Refer to Updates to Slack connector to support file upload for more information.

Slack is ending support for their files.upload API on March 11, 2025. Refer to the Slack changelog for more information.

Retool is working to update our Slack integration as quickly as possible. In the meantime, if you need files.upload functionality, you can use a REST Query to utilize the new files.getUploadURLExternal and files.completeUploadExternal APIs.

This workaround is temporary, and Retool will restore access to file upload functionality within the Slack integration as soon as possible. Another changelog post will be made when the ability to upload files is restored. Other functionality in the Slack integration remains uninterrupted.

Action Required: Upgrade self-hosted Retool to resolve an issue with workflows that use custom libraries

Retool recently discovered a bug in certain versions of self-hosted Retool that affects workflows using custom JavaScript libraries. This issue can:

  • Prevent you from adding new libraries to a workflow.
  • Cause existing workflows that use custom libraries to fail.

This issue can occur after upgrading from an earlier version of self-hosted Retool to one of following affected versions:

ChannelAffected versions
Stable3.114.1-stable to 3.114.8-stable
Edge3.114.0-edge to 3.144.0-edge

Retool has released 3.114.9 on the Stable channel which resolves the issue. The next Edge channel release will also include the bug fix.

If you have a deployment that currently runs an earlier version of self-hosted Retool, do not upgrade to an affected version.