Same annotation line for 2 y-axis point

Hi all,

I am trying to figure out how to use the same annotation for the x-axis with 2 y-axis points. This is what I have for one single x-axis and y-axis point currently.

    annotations: [
            x: retire_age,
            y: retire_income,
            xref: 'x',
            yref: 'y',
            text: 'Start Retirement',
            showarrow: true,
            arrowhead: 7,
            ax: -40,
            ay: -40