diff --git a/README.md b/README.md
index 66a6a5ff5..9982722b8 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# lodash v3.4.1
+# lodash v3.4.2
 
 The [lodash](https://lodash.com/) library exported as [npm packages](https://www.npmjs.com/browse/keyword/lodash-modularized) per method.
 
diff --git a/lodash.add/LICENSE.txt b/lodash.add/LICENSE
similarity index 89%
rename from lodash.add/LICENSE.txt
rename to lodash.add/LICENSE
index 9cd87e5dc..b054ca5a3 100644
--- a/lodash.add/LICENSE.txt
+++ b/lodash.add/LICENSE
@@ -1,5 +1,5 @@
-Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
-Based on Underscore.js, copyright 2009-2015 Jeremy Ashkenas,
+Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
+Based on Underscore.js, copyright 2009-2016 Jeremy Ashkenas,
 DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
 
 Permission is hereby granted, free of charge, to any person obtaining
diff --git a/lodash.add/README.md b/lodash.add/README.md
index 7595fdce0..2858abe3f 100644
--- a/lodash.add/README.md
+++ b/lodash.add/README.md
@@ -1,20 +1,18 @@
-# lodash.add v3.4.1
+# lodash.add v3.4.2
 
-The [modern build](https://github.com/lodash/lodash/wiki/Build-Differences) of [lodash’s](https://lodash.com/) `_.add` exported as a [Node.js](http://nodejs.org/)/[io.js](https://iojs.org/) module.
+The [lodash](https://lodash.com/) method `_.add` exported as a [Node.js](https://nodejs.org/) module.
 
 ## Installation
 
 Using npm:
-
 ```bash
 $ {sudo -H} npm i -g npm
 $ npm i --save lodash.add
 ```
 
-In Node.js/io.js:
-
+In Node.js:
 ```js
 var add = require('lodash.add');
 ```
 
-See the [documentation](https://lodash.com/docs#add) or [package source](https://github.com/lodash/lodash/blob/3.4.1-npm-packages/lodash.add) for more details.
+See the [documentation](https://lodash.com/docs#add) or [package source](https://github.com/lodash/lodash/blob/3.4.2-npm-packages/lodash.add) for more details.
diff --git a/lodash.add/index.js b/lodash.add/index.js
index abcefc9e7..f881b6976 100644
--- a/lodash.add/index.js
+++ b/lodash.add/index.js
@@ -1,9 +1,9 @@
 /**
- * lodash 3.4.1 (Custom Build) <https://lodash.com/>
- * Build: `lodash modern modularize exports="npm" -o ./`
- * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
+ * lodash 3.4.2 (Custom Build) <https://lodash.com/>
+ * Build: `lodash modularize exports="npm" -o ./`
+ * Copyright 2012-2016 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
- * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
 
@@ -13,16 +13,23 @@
  * @static
  * @memberOf _
  * @category Math
- * @param {number} augend The first number to add.
- * @param {number} addend The second number to add.
- * @returns {number} Returns the sum.
+ * @param {number} augend The first number in an addition.
+ * @param {number} addend The second number in an addition.
+ * @returns {number} Returns the total.
  * @example
  *
  * _.add(6, 4);
  * // => 10
  */
 function add(augend, addend) {
-  return (+augend || 0) + (+addend || 0);
+  var result;
+  if (augend !== undefined) {
+    result = augend;
+  }
+  if (addend !== undefined) {
+    result = result === undefined ? addend : (result + addend);
+  }
+  return result;
 }
 
 module.exports = add;
diff --git a/lodash.add/package.json b/lodash.add/package.json
index 9a7bcaea1..be3c6788d 100644
--- a/lodash.add/package.json
+++ b/lodash.add/package.json
@@ -1,17 +1,15 @@
 {
   "name": "lodash.add",
-  "version": "3.4.1",
-  "description": "The modern build of lodash’s `_.add` as a module.",
+  "version": "3.4.2",
+  "description": "The lodash method `_.add` exported as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",
   "license": "MIT",
-  "keywords": "lodash, lodash-modularized, stdlib, util",
+  "keywords": "lodash, lodash-modularized, stdlib, util, add",
   "author": "John-David Dalton <john.david.dalton@gmail.com> (http://allyoucanleet.com/)",
   "contributors": [
     "John-David Dalton <john.david.dalton@gmail.com> (http://allyoucanleet.com/)",
-    "Benjamin Tan <demoneaux@gmail.com> (https://d10.github.io/)",
-    "Blaine Bublitz <blaine@iceddev.com> (http://www.iceddev.com/)",
-    "Kit Cambridge <github@kitcambridge.be> (http://kitcambridge.be/)",
+    "Blaine Bublitz <blaine@iceddev.com> (https://github.com/phated)",
     "Mathias Bynens <mathias@qiwi.be> (https://mathiasbynens.be/)"
   ],
   "repository": "lodash/lodash",
diff --git a/lodash.sortbyorder/README.md b/lodash.sortbyorder/README.md
index 1d6a7f38b..bc62a0a61 100644
--- a/lodash.sortbyorder/README.md
+++ b/lodash.sortbyorder/README.md
@@ -1,4 +1,4 @@
-# lodash.sortbyorder v3.4.1
+# lodash.sortbyorder v3.4.2
 
 The [modern build](https://github.com/lodash/lodash/wiki/Build-Differences) of [lodash’s](https://lodash.com/) `_.sortByOrder` exported as a [Node.js](http://nodejs.org/)/[io.js](https://iojs.org/) module.
 
@@ -17,4 +17,4 @@ In Node.js/io.js:
 var sortByOrder = require('lodash.sortbyorder');
 ```
 
-See the [documentation](https://lodash.com/docs#sortByOrder) or [package source](https://github.com/lodash/lodash/blob/3.4.1-npm-packages/lodash.sortbyorder) for more details.
+See the [documentation](https://lodash.com/docs#sortByOrder) or [package source](https://github.com/lodash/lodash/blob/3.4.2-npm-packages/lodash.sortbyorder) for more details.
diff --git a/lodash.sortbyorder/index.js b/lodash.sortbyorder/index.js
index 1fa057738..a9553024c 100644
--- a/lodash.sortbyorder/index.js
+++ b/lodash.sortbyorder/index.js
@@ -1,8 +1,8 @@
 /**
- * lodash 3.4.1 (Custom Build) <https://lodash.com/>
+ * lodash 3.4.2 (Custom Build) <https://lodash.com/>
  * Build: `lodash modern modularize exports="npm" -o ./`
  * Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
- * Based on Underscore.js 1.8.2 <http://underscorejs.org/LICENSE>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
  * Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
  * Available under MIT license <https://lodash.com/license>
  */
@@ -13,45 +13,52 @@ var baseEach = require('lodash._baseeach'),
 
 /**
  * This method is like `_.sortByAll` except that it allows specifying the
- * sort orders of the property names to sort by. A truthy value in `orders`
- * will sort the corresponding property name in ascending order while a
- * falsey value will sort it in descending order.
+ * sort orders of the iteratees to sort by. A truthy value in `orders` will
+ * sort the corresponding property name in ascending order while a falsey
+ * value will sort it in descending order.
+ *
+ * If a property name is provided for an iteratee the created `_.property`
+ * style callback returns the property value of the given element.
+ *
+ * If an object is provided for an iteratee the created `_.matches` style
+ * callback returns `true` for elements that have the properties of the given
+ * object, else `false`.
  *
  * @static
  * @memberOf _
  * @category Collection
  * @param {Array|Object|string} collection The collection to iterate over.
- * @param {string[]} props The property names to sort by.
- * @param {boolean[]} orders The sort orders of `props`.
+ * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
+ * @param {boolean[]} orders The sort orders of `iteratees`.
  * @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`.
  * @returns {Array} Returns the new sorted array.
  * @example
  *
  * var users = [
- *   { 'user': 'barney', 'age': 26 },
- *   { 'user': 'fred',   'age': 40 },
- *   { 'user': 'barney', 'age': 36 },
- *   { 'user': 'fred',   'age': 30 }
+ *   { 'user': 'fred',   'age': 48 },
+ *   { 'user': 'barney', 'age': 34 },
+ *   { 'user': 'fred',   'age': 42 },
+ *   { 'user': 'barney', 'age': 36 }
  * ];
  *
  * // sort by `user` in ascending order and by `age` in descending order
  * _.map(_.sortByOrder(users, ['user', 'age'], [true, false]), _.values);
- * // => [['barney', 36], ['barney', 26], ['fred', 40], ['fred', 30]]
+ * // => [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 42]]
  */
-function sortByOrder(collection, props, orders, guard) {
+function sortByOrder(collection, iteratees, orders, guard) {
   if (collection == null) {
     return [];
   }
-  if (guard && isIterateeCall(props, orders, guard)) {
+  if (guard && isIterateeCall(iteratees, orders, guard)) {
     orders = null;
   }
-  if (!isArray(props)) {
-    props = props == null ? [] : [props];
+  if (!isArray(iteratees)) {
+    iteratees = iteratees == null ? [] : [iteratees];
   }
   if (!isArray(orders)) {
     orders = orders == null ? [] : [orders];
   }
-  return baseSortByOrder(collection, props, orders);
+  return baseSortByOrder(collection, iteratees, orders);
 }
 
 module.exports = sortByOrder;
diff --git a/lodash.sortbyorder/package.json b/lodash.sortbyorder/package.json
index 65c8e826e..bc4bddae9 100644
--- a/lodash.sortbyorder/package.json
+++ b/lodash.sortbyorder/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lodash.sortbyorder",
-  "version": "3.4.1",
+  "version": "3.4.2",
   "description": "The modern build of lodash’s `_.sortByOrder` as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",