CircleCI doesn't notice when Github default branch is updated

Here is some follow up from CircleCI support, these steps worked for us to fix the issue:

This will usually resolve itself, given a little time, but you can speed this up by resetting the webhooks. To do this:

  1. Remove all CircleCI webhooks and services from your GitHub or Bitbucket repo settings. (Check under Settings > Webhooks on the relevant service.)
  2. Tell the project to stop building on CircleCI through “Project settings”. (Click the gear icon in the upper right corner of the page listing all recent builds for that project.)
  3. Add the project back on CircleCI.
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