diff --git a/gulpfile.js b/gulpfile.js
index 0ee1ce2e..5a58ea1c 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -4,7 +4,6 @@
     var gulp        = require('gulp'),
         jshint      = require('gulp-jshint'),
         recess      = require('gulp-recess'),
-        concat      = require('gulp-concat'),
         mocha       = require('gulp-mocha'),
         
         cloudfunc   = require('./test/lib/cloudfunc.js'),
@@ -38,7 +37,6 @@
     gulp.task('css', function () {
         gulp.src('css/*.css')
             .pipe(recess())
-            .pipe(concat('all.css'))
             .on('error', onError);
     });
     
diff --git a/package.json b/package.json
index 187b81f3..32f84ef8 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,6 @@
   },
   "devDependencies": {
     "gulp": "3.6.x",
-    "gulp-concat": "2.2.x",
     "gulp-jshint": "1.6.x",
     "gulp-mocha": "^0.4.1",
     "gulp-recess": "0.3.x",