diff --git a/eddystone-url/README.md b/eddystone-url/README.md
index eecc4a9..fb721ad 100644
--- a/eddystone-url/README.md
+++ b/eddystone-url/README.md
@@ -39,6 +39,7 @@ The URL Scheme Prefix byte defines the identifier scheme, an optional prefix and
 |1        | 0x01       | `https://www.`
 |2        | 0x02       | `http://`
 |3        | 0x03       | `https://`
+|15       | 0xff       | `wifi://`
 
 ### Eddystone-URL HTTP URL encoding
 
diff --git a/libraries/javascript/eddystone-advertising/eddystone-advertising.js b/libraries/javascript/eddystone-advertising/eddystone-advertising.js
index 26e57bb..4ff5a10 100644
--- a/libraries/javascript/eddystone-advertising/eddystone-advertising.js
+++ b/libraries/javascript/eddystone-advertising/eddystone-advertising.js
@@ -1,4 +1,4 @@
-(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
+(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
 (() => {
   'use strict';
 
diff --git a/libraries/javascript/eddystone-advertising/gulpfile.babel.js b/libraries/javascript/eddystone-advertising/gulpfile.babel.js
index 79b6aa2..3566c53 100644
--- a/libraries/javascript/eddystone-advertising/gulpfile.babel.js
+++ b/libraries/javascript/eddystone-advertising/gulpfile.babel.js
@@ -26,14 +26,6 @@ gulp.task('docs', () => {
     .pipe(gulp.dest(''));
 });
 
-gulp.task('test', [
-  'test:docs',
-  'test:dependencies',
-  'test:browserify',
-  'test:style',
-  'test:unit']
-);
-
 gulp.task('browserify', () => {
 
   return getBrowserifyPipe()
@@ -71,10 +63,18 @@ gulp.task('test:unit', () => {
              .pipe(mocha({reporter: 'spec'}));
 });
 
-gulp.task('clean', ['test:chrome-os'], cb => {
+gulp.task('clean', cb => {
   del('temp/', cb);
 });
 
+gulp.task('test', gulp.series(
+  'test:docs',
+  'test:dependencies',
+  'test:browserify',
+  'test:style',
+  'test:unit')
+);
+
 function getJsDocPipe() {
   return gulp.src('lib/*.js')
              .pipe(concat('README.md'))
diff --git a/libraries/javascript/eddystone-advertising/package.json b/libraries/javascript/eddystone-advertising/package.json
index aef3619..14efb39 100644
--- a/libraries/javascript/eddystone-advertising/package.json
+++ b/libraries/javascript/eddystone-advertising/package.json
@@ -40,7 +40,7 @@
     "chai": "^3.2.0",
     "chai-as-promised": "^5.1.0",
     "del": "^2.0.0",
-    "gulp": "^3.9.0",
+    "gulp": "^4.0.0",
     "gulp-concat": "^2.6.0",
     "gulp-david": "^0.4.1",
     "gulp-diff": "^1.0.0",