China will adjust the weighting of a key yuan index basket in 2022, the country's foreign exchange trading platform said on Friday.

Starting on Jan. 1, the China Foreign Exchange Trade System (CFETS) will increase the U.S. dollar's weighting in the CFETS currency basket to 19.88% from 18.79% and raise the euro's weighting to 18.45% from 18.15%, according to an online statement.

The trading platform also said it would keep the weighting of a yuan index based on the BIS currency basket and another based on the SDR basket unchanged.