North Korean leader Kim Jong Un has promoted his younger sister Kim Yo Jong to lead a party department after years serving as a deputy, according to state media on Tuesday.

The Korean Central News Agency (KCNA) revealed Kim Yo Jong was appointed director of an unspecified department at the first plenary meeting of the new Workers’ Party of Korea (WPK) Central Committee. The meeting, held Monday amid the ongoing Ninth Party Congress, decided on a range of shakeups in high-level leadership positions.

Kim topped the list of 11 “alternate” politburo members printed in Tuesday’s Rodong Sinmun, indicating she