Refreshing the public supermarket key

After creating a new Starter Kit in the hosted Chef Server, knife fails to authenticate to the public supermarket when I try to share or unshare cookbooks. The fingerprint displayed in the supermarket profile does not match the fingerprint of the private key configured in knife. Logging out and back in to the supermarket did not fix the problem.

How can I refresh the key used by the supermarket to match the one used by the hosted Chef server?