Determine which version of GitLab Self-Managed you have

If you add /api/v4/version to the end of the URL for your GitLab Self-Managed instance the resulting page will show you your version information. For example, our URL is, which results in:

version: "13.6.4"

revision: "2754dab2b1b"

If you would like to use CodeStream's integration with merge requests from GitLab Self-Managed, you'll need version 12.10 or later.