Why doesn't gulp-sass put the last curly brace correctly (not pretty)?

Question

Sass

Here is the code after compilation:

body {
  font-family: "Open Sans", Arial, sans-serif;
  line-height: 1.65;
  color: #333;
  background: #DFF0FF;
  overflow-x: hidden;
  margin: 0; }

I want like this:

body {
  font-family: "Open Sans", Arial, sans-serif;
  line-height: 1.65;
  color: #333;
  background: #DFF0FF;
  overflow-x: hidden;
  margin: 0; 
}