Asia Pacific Defense Journal has reported on on January 22, 2021, the Philippine Navy expects to start the upgrade of its three Del Pilar-class frigates within the year in collaboration with the South Korean company Hanwha Systems.
In August 2019, South Korean company Hanwha Systems and the Philippines Department of National Defense (DND) signed a contract to upgrade the Del Pilar-class Frigate. The upgrade of the ships will include Naval Shield Integrated Combat Management Systems (CMS) from Hanwha Systems, and a new hull-mounted sonar and Electronic Support Measures (ESM) system.
Philippines; Del Pilar-class frigates modernization program