Error upgrade to 12.0.3 from 11.11.5 version

Current Gitlab version is 11.11.5-ee, installed in Kubernetes, through helm chart. When I try to update the gitlab to version 12.0.4, i get an error:

It seems you are attempting an unsupported upgrade path. Please follow the upgrade documentation at https://docs.gitlab.com/ee/policy/maintenance.html#upgrade-recommendations and upgrade to 11.11.3 (Chart Version 1.9.4) before upgrading to 12.0.3.

My current version of Gitlab is newer than required, why can this error occur?