diff --git a/bundlewatch.config.js b/bundlewatch.config.js
index ebbf2cb..8683ac6 100644
--- a/bundlewatch.config.js
+++ b/bundlewatch.config.js
@@ -10,11 +10,11 @@ const bundlewatchConfig = {
     },
     {
       path: './dist/cloudinary-jquery.min.js',
-      maxSize: '23kb'
+      maxSize: '24kb'
     },
     {
       path: './dist/cloudinary-jquery-file-upload.min.js',
-      maxSize: '24kb'
+      maxSize: '25kb'
     }
   ],
   defaultCompression: 'gzip',
diff --git a/js/jquery.cloudinary.js b/js/jquery.cloudinary.js
index 7b41a0f..b61c442 100644
--- a/js/jquery.cloudinary.js
+++ b/js/jquery.cloudinary.js
@@ -422,7 +422,7 @@ var slice = [].slice,
    * @returns {boolean} true if item is empty
    */
   isEmpty = function(item) {
-    return (item == null) || (jQuery.isArray(item) || Util.isString(item)) && item.length === 0 || (jQuery.isPlainObject(item) && jQuery.isEmptyObject(item));
+    return (item == null) || (Array.isArray(item) || Util.isString(item)) && item.length === 0 || (jQuery.isPlainObject(item) && jQuery.isEmptyObject(item));
   };
 
   /**
@@ -565,7 +565,7 @@ var slice = [].slice,
     setData: setData,
     width: width,
     isString: isString,
-    isArray: jQuery.isArray,
+    isArray: Array.isArray,
     isEmpty: isEmpty,
 
     /**
@@ -4728,7 +4728,7 @@ var slice = [].slice,
           return k + '=' + v;
         }).join('|');
       } else if (Util.isArray(value)) {
-        if (value.length > 0 && jQuery.isArray(value[0])) {
+        if (value.length > 0 && Array.isArray(value[0])) {
           upload_params[key] = jQuery.map(value, function(array_value) {
             return array_value.join(',');
           }).join('|');
diff --git a/src/jquery-file-upload.js b/src/jquery-file-upload.js
index ddbb487..e9b80fd 100644
--- a/src/jquery-file-upload.js
+++ b/src/jquery-file-upload.js
@@ -185,7 +185,7 @@ jQuery.fn.unsigned_cloudinary_upload = function(upload_preset, upload_params = {
         return k + '=' + v;
       }).join('|');
     } else if (Util.isArray(value)) {
-      if (value.length > 0 && jQuery.isArray(value[0])) {
+      if (value.length > 0 && Array.isArray(value[0])) {
         upload_params[key] = jQuery.map(value, function(array_value) {
           return array_value.join(',');
         }).join('|');
diff --git a/src/util/jquery.js b/src/util/jquery.js
index 773e85a..da76668 100644
--- a/src/util/jquery.js
+++ b/src/util/jquery.js
@@ -238,7 +238,7 @@ export var identity = function(value) {
 /**
  * @class Util
  */
-export var isArray = jQuery.isArray;
+export var isArray = Array.isArray;
 
 export var assign = jQuery.extend;
 
diff --git a/test/spec/env/js-folder-spec.js b/test/spec/env/js-folder-spec.js
index b3153ea..324d1da 100644
--- a/test/spec/env/js-folder-spec.js
+++ b/test/spec/env/js-folder-spec.js
@@ -16,7 +16,7 @@ jasmine.getEnv().addReporter(new SpecReporter({
 // List of files to test
 const files = [
   {name: 'canvas-to-blob.min.js', checkSum: "7c7becb6f9ecf2defa663e70a6b3a0f5"},
-  {name: 'jquery.cloudinary.js', checkSum: "22e7276c8dec1760246a230fd9fa26c3"},
+  {name: 'jquery.cloudinary.js', checkSum: "171ee44fcb5e68e16362c71775a88afc"},
   {name: 'jquery.fileupload.js', checkSum: "4bfd85460689a29e314ddfad50c184e0"},
   {name: 'jquery.fileupload-image.js', checkSum: "7c40367b00f74b0c7c43bff009dde942"},
   {name: 'jquery.fileupload-process.js', checkSum: "840f65232eaf1619ea0aff1ab4f5e444"},