diff --git a/types/gulp-postcss/gulp-postcss-tests.ts b/types/gulp-postcss/gulp-postcss-tests.ts
index 9fe2284389..8da7748431 100644
--- a/types/gulp-postcss/gulp-postcss-tests.ts
+++ b/types/gulp-postcss/gulp-postcss-tests.ts
@@ -1,7 +1,8 @@
 import * as gulp from 'gulp';
 import * as postcss from 'gulp-postcss';
 import * as autoprefixer from 'autoprefixer';
-import * as Vinyl from 'vinyl'
+import * as Vinyl from 'vinyl';
+import * as sass from 'sass';
 
 gulp.task('postCss1', () => {
     return gulp.src('./src/*.css')
@@ -16,14 +17,12 @@ gulp.task('postCss2', () => {
         .pipe(gulp.dest('./dest'));
 });
 
-/*
 gulp.task('postCss3', () => {
     const plugins = [ autoprefixer({browsers: ['last 1 version']}) ];
     return gulp.src('in.sss')
-        .pipe(postcss(plugins, { parser: sugarss }))
+        .pipe(postcss(plugins, { parser: sass }))
         .pipe(gulp.dest('out'));
 });
-*/
 
 gulp.task('postCss4', () => {
     function callback(file: Vinyl) {
diff --git a/types/gulp-postcss/index.d.ts b/types/gulp-postcss/index.d.ts
index 864be16098..ba05acaac2 100644
--- a/types/gulp-postcss/index.d.ts
+++ b/types/gulp-postcss/index.d.ts
@@ -2,12 +2,12 @@
 // Project: https://www.npmjs.com/package/gulp-postcss
 // Definitions by: Takesi Tokugawa <https://github.com/TokugawaTakesi>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
-// TypeScript Version: 2.2
+// TypeScript Version: 2.8
 
 /// <reference types="node"/>
 import Vinyl = require('vinyl');
 
-declare function GulpPostCss(plugins?: string[], options?: GulpPostCss.Options): NodeJS.ReadWriteStream;
+declare function GulpPostCss(plugins?: any[], options?: GulpPostCss.Options): NodeJS.ReadWriteStream;
 declare function GulpPostCss(callback?: (file: Vinyl) => { plugins?: string[], options?: GulpPostCss.Options }):
     NodeJS.ReadWriteStream;