BOGOR, Indonesia (AP) — Singaporean Prime Minister Lee Hsien Loong and Indonesian President Joko Widodo on Monday celebrated the countries’ continued cooperation at their seventh and final Leaders’ Retreat in Jakarta, an annual meeting between the two Southeast Asian leaders that was also attended this year by their successors.

Lee’s visit to Indonesia is one of his last working trips before he hands over the reins of his administration to a new leader. The eldest son of Singaporean founding father Lee Kuan Yew announced his resignation earlier this month after two decades at the helm. His deputy prime minister and finance minister, Lawrence Wong, will succeed him in May.

Widodo, Indonesia’s first president from outside the traditional Jakarta elite who is widely known by the nickname Jokowi, will be succeeded by Prabowo Subianto, who takes office in October.