Increase publish rate of /joint_states

[Chung-Shan]

Hi, is it possible to increase publish rate of /joint_states ?
Currently, it publishes at ~37Hz

subscribed to [/joint_states]
average rate: 36.982
	min: 0.026s max: 0.029s std dev: 0.00071s window: 37
average rate: 36.995
	min: 0.025s max: 0.029s std dev: 0.00078s window: 74