diff --git a/bower.json b/bower.json
index cd149c9..f8d5f8d 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "wok",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "authors": [
     "Marco Solazzi <marco.solazzi@gmail.com>",
     "Matteo Guidotto <j8.matteo@gmail.com>",
diff --git a/build/gulp-tasks/modernizr.js b/build/gulp-tasks/modernizr.js
index aaa7b2b..8bdda24 100644
--- a/build/gulp-tasks/modernizr.js
+++ b/build/gulp-tasks/modernizr.js
@@ -56,11 +56,12 @@ module.exports = function (gulp, $, options) {
     gulp.task('modernizr', ['modernizr:html5shiv'], (done) => {
         const fs = require('fs');
         const filePath = options.assetsPath('dist.vendors', '/modernizr');
+        var modernizr; //eslint-disable-line no-var
 
         require('mkdirp').sync(filePath);
 
         if (options.production) {
-            const modernizr = require('customizr');
+            modernizr = require('customizr');
             modernizr(distConfig, (obj) => {
                 const tests = obj.options['feature-detects'];
                 const colors = $.util.colors;
@@ -83,7 +84,7 @@ module.exports = function (gulp, $, options) {
             });
         } else {
             //full build
-            const modernizr = require('modernizr');
+            modernizr = require('modernizr');
             const fullConfig = require('../gulp-config/modernizr.conf.json');
             modernizr.build(fullConfig, (result) => {
                 fs.writeFile(filePath + '/modernizr.js', result, done);
diff --git a/package.json b/package.json
index 4987cac..df0a00b 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "wok",
   "description": "A Static Website Boilerplate",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "license": "MIT",
   "repository": {
     "type": "git",