# Changelog for Highcharts Gantt v9.1.1 (2021-06-04)

- Most changes listed under Highcharts 9.1.1 above also apply to Highcharts Gantt 9.1.1.

## Bug fixes
- Fixed #15742, rightmost gantt chart grid axis tick labels did not get shortened correctly.
- Fixed #15692, gantt chart grid axis did not update from months to years when resizing down.
- Fixed #15661, options got mutated when creating map or gantt chart.
- Fixed #15664, updating `lineColor` and `lineWidth` of gantt chart outer axis border did not work.
