1 files changed, 2 insertions, 0 deletions
diff --git a/grunt.js b/grunt.js
index af751246c..41145bf93 100644
--- a/grunt.js
+++ b/grunt.js
@@ -81,6 +81,7 @@ uiFiles.forEach(function( file ) {
 });
 
 // grunt plugins
+grunt.loadNpmTasks( "grunt-contrib" );
 grunt.loadNpmTasks( "grunt-css" );
 grunt.loadNpmTasks( "grunt-html" );
 grunt.loadNpmTasks( "grunt-compare-size" );
@@ -131,6 +132,7 @@ grunt.initConfig({
 		bannerCSS: createBanner( cssFiles )
 	},
 	compare_size: compareFiles,
+	clean: ["dist"],
 	concat: {
 		ui: {
 			src: [ "<banner:meta.bannerAll>", stripBanner( uiFiles ) ],