diff --git a/gulpfile.js b/gulpfile.js
index 3095021..6c9a51d 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -2,7 +2,6 @@ const { exec } = require('child_process')
 const gulp = require('gulp')
 const cssnano = require('cssnano')
 const del = require('del')
-const Fiber = require('fibers')
 const buble = require('gulp-buble')
 const eslint = require('gulp-eslint7')
 const gulpif = require('gulp-if')
@@ -106,7 +105,7 @@ gulp.task('build:sass', function () {
     ignore: '_*.scss'
   })
     .pipe(sourcemaps.init())
-    .pipe(sass({ fiber: Fiber }).on('error', sass.logError))
+    .pipe(sass().on('error', sass.logError))
     .pipe(postcss(postcssPlugins))
     .pipe(sourcemaps.write('.'))
     .pipe(gulp.dest(dist))
diff --git a/package.json b/package.json
index 370c7e4..7d0907e 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,6 @@
     "eslint-plugin-import": "~2.25.4",
     "eslint-plugin-node": "~11.1.0",
     "eslint-plugin-promise": "~4.3.1",
-    "fibers": "~5.0.0",
     "gulp": "~4.0.2",
     "gulp-buble": "~0.9.0",
     "gulp-cli": "~2.3.0",