I am using line chart from http://www.chartjs.org/

As you can see max value (1
In my case, I used a callback in yaxis ticks, my values are in percent and when it reaches 100% it doesn't show the dot, I used this :
yAxes: [{
ticks: {
beginAtZero: true,
steps: 10,
stepValue: 5,
min: 0,
max: 100.1,
callback: function(value, index, values) {
if (value !== 100.1) {
return values[index]
}
}
}
}],
And it worked well.