GitLab Integration Slack Notifications Stopped Working

Nothing changed in our repositories configurations or our Slack incoming webhook configuration and yet we are no longer getting any notifications via Slack of our activity on GitLab.

This started last Friday and everything was working fine Thursday. I thought perhaps it was some transient issue GitLab’s side, but we are still not receiving anything come Monday morning and everything looks fine on and their twitter account.

Has anyone else experienced this? i’m baffled, since as I say - nothing changed our end.

Ok - it turns out our slack url/token had silently expired (with no warnings or documentation anywhere on the Slack side of things!) Apologies for the noise. This is now resolved, but might prove handy to someone else that runs into the same issue.

Faced the same issue. I had to re-enable “Incoming Webhooks” Custom App on Slack