diff --git a/index.umd.js b/index.umd.js
index 15fdf90..5bd0c11 100644
--- a/index.umd.js
+++ b/index.umd.js
@@ -1,4 +1,4 @@
-!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.deepFilter=e()}}(function(){var define,module,exports;return (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(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.deepFilter = f()}})(function(){var define,module,exports;return (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){
 'use strict';
 
 var isPlainObject = require('is-plain-object');
@@ -61,14 +61,55 @@ module.exports = filter;
 /*!
  * is-plain-object <https://github.com/jonschlinkert/is-plain-object>
  *
- * Copyright (c) 2014 Jon Schlinkert, contributors.
- * Licensed under the MIT License
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT License.
  */
 
 'use strict';
 
+var isObject = require('isobject');
+
+function isObjectObject(o) {
+  return isObject(o) === true
+    && Object.prototype.toString.call(o) === '[object Object]';
+}
+
 module.exports = function isPlainObject(o) {
-  return !!o && typeof o === 'object' && o.constructor === Object;
+  var ctor,prot;
+  
+  if (isObjectObject(o) === false) return false;
+  
+  // If has modified constructor
+  ctor = o.constructor;
+  if (typeof ctor !== 'function') return false;
+  
+  // If has modified prototype
+  prot = ctor.prototype;
+  if (isObjectObject(prot) === false) return false;
+  
+  // If constructor does not have an Object-specific method
+  if (prot.hasOwnProperty('isPrototypeOf') === false) {
+    return false;
+  }
+  
+  // Most likely a plain Object
+  return true;
+};
+
+},{"isobject":3}],3:[function(require,module,exports){
+/*!
+ * isobject <https://github.com/jonschlinkert/isobject>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+module.exports = function isObject(val) {
+  return val != null && typeof val === 'object'
+    && !Array.isArray(val);
 };
+
 },{}]},{},[1])(1)
 });
\ No newline at end of file