All my Todoist integrations are currently failing

All my Todoist integrations started failing today. The error says the endpoint is deprecated and to switch from v8 to v1.

Here is one example from my "ToDoIst - Add Google Calendar Events" workflow:
Task History ID: IjU3NjUwNTY0MDYzNDA0MzU1MjZjNTUzMjUxMzc1MTY1NTQzMjBmMzAi_pc

Error: "This endpoint is deprecated. If you're reading this on a browser, there's a good chance you can change the v8 part on the URL to v1 and get away with it. If you're using the API directly, please update your use case to rely on the new API endpoints, available under /api/v1/ prefixes."

It continues with all my other Todoist workflows now as well:

It looks like Todoist deprecated their v8 API and Pabbly's Todoist integration hasn't been updated to use the new v1 endpoints yet.
Could you please update the Todoist app to use the current API?

Thanks!

Hey @sven-bo,

Could you please try testing the Create Task action under the application named Todoist (V9)? Please let us know how it gow.

I see the Todoist (V9) option, but my concern is that I'm using this connection across 81 workflows. Does switching to V9 mean I need to manually update every single one of them? That would be a massive amount of work.

Is there a way to migrate all existing workflows at once?

Hi @sven-bo,

We completely understand your concern, especially with 81 workflows involved.

At the moment, the only recommended solution is to switch to the Todoist (V9) application. The older version (v1/v2-based) is no longer actively maintained, and since Todoist has deprecated those endpoints, we cannot ensure its continued functionality.

We suggest testing the action once using Todoist (V9). If it works as expected, you would need to update the Todoist actions in your workflows manually.

We understand this is not ideal, but moving to the latest version is the only reliable long-term solution.

Please let us know once you've tested V9, and we’ll assist you further if needed.

Yes, V9 works fine on my end. But having to manually update 81 workflows is a significant effort.

Even if a backend migration isn't possible, I would have appreciated some advance communication about this. Instead, I woke up to all my Todoist integrations broken, which forced me to drop everything and reprioritize my day just to troubleshoot.

A heads-up 1-2 weeks before the deprecation would have gone a long way. That way I could have planned time to go through each workflow and migrate them properly, rather than scrambling to fix things after they've already failed.

Hi @sven-bo,

Thank you for sharing your honest feedback — we completely understand how disruptive this must have been.

We have shared your feedback internally with our team and requested that advance email notifications be sent in cases of application or API version deprecations going forward. We agree that proactive communication would help users plan migrations more smoothly.

We truly appreciate you taking the time to highlight this, and we’re sorry for the inconvenience caused.