diff --git a/gulp/clean.coffee b/gulp/clean.coffee
index 084dc99b..ae31b1a5 100644
--- a/gulp/clean.coffee
+++ b/gulp/clean.coffee
@@ -1,9 +1,5 @@
 g = require 'gulp'
 
 g.task 'clean', ->
-  g.d.sync 'source/assets/css'
-  g.d.sync 'source/assets/fonts'
-  g.d.sync 'source/assets/js'
-  g.d.sync 'output_*/assets/css'
-  g.d.sync 'output_*/assets/fonts'
-  g.d.sync 'output_*/assets/js'
+  g.src "{output_*,source}/assets/{css,fonts,js}", read: false
+    .pipe g.p.clean()
diff --git a/package.json b/package.json
index f5db32e9..856134cf 100644
--- a/package.json
+++ b/package.json
@@ -4,6 +4,7 @@
     "coffee-script": "^1.10.0",
     "del": "^2.2.0",
     "gulp": "^3.9.0",
+    "gulp-clean": "^0.3.1",
     "gulp-concat": "^2.6.0",
     "gulp-htmlmin": "^1.3.0",
     "gulp-if": "^2.0.0",