Could not find an option named "lineNumbers"

[sarbjeet-cmsDev]

Here is My Gruntfile

module.exports = function(grunt) {
grunt.initConfig({
pkg: grunt.file.readJSON('package.json'),
sass: {
dist: {
options: {
debugInfo:false,
style: 'expanded',
precision: 3,
lineNumbers: true
},
files: {
'style.css' : 'style.scss'
}
}
},
watch: {
css: {
files: 'assets/**/*.scss',
tasks: ['sass']
}
}
});
grunt.loadNpmTasks('grunt-contrib-sass');
grunt.loadNpmTasks('grunt-contrib-watch');
grunt.registerTask('default',['watch']);
}

I am getting error
Could not find an option named "lineNumbers".

I need to show line number is Compiled CSS file