Where do I add deploy keys? There is no menu item under Repository

In your docs it says:

If you are a project master or owner, you can add a deploy key in the project settings under the section ‘Repository’. Specify a title for the new deploy key and paste a public SSH key. After this, the machine that uses the corresponding private SSH key has read-only or read-write (if enabled) access to the project.

However, the Repository section does not have a “Deploy Keys”.