diff --git a/README.md b/README.md
index 295a973a5..2326b4ae4 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# lodash v4.1.4
+# lodash v4.1.5
 
 The [lodash](https://lodash.com/) library exported as [npm packages](https://www.npmjs.com/browse/keyword/lodash-modularized) per method.
 
diff --git a/lodash._mapcache/README.md b/lodash._mapcache/README.md
index 905fe82f7..68c6245c0 100644
--- a/lodash._mapcache/README.md
+++ b/lodash._mapcache/README.md
@@ -1,4 +1,4 @@
-# lodash._mapcache v4.1.4
+# lodash._mapcache v4.1.5
 
 The internal [lodash](https://lodash.com/) function `MapCache` exported as a [Node.js](https://nodejs.org/) module.
 
@@ -15,4 +15,4 @@ In Node.js:
 var MapCache = require('lodash._mapcache');
 ```
 
-See the [package source](https://github.com/lodash/lodash/blob/4.1.4-npm-packages/lodash._mapcache) for more details.
+See the [package source](https://github.com/lodash/lodash/blob/4.1.5-npm-packages/lodash._mapcache) for more details.
diff --git a/lodash._mapcache/index.js b/lodash._mapcache/index.js
index b575d389a..85790a167 100644
--- a/lodash._mapcache/index.js
+++ b/lodash._mapcache/index.js
@@ -1,5 +1,5 @@
 /**
- * lodash 4.1.4 (Custom Build) <https://lodash.com/>
+ * lodash 4.1.5 (Custom Build) <https://lodash.com/>
  * Build: `lodash modularize exports="npm" -o ./`
  * Copyright jQuery Foundation and other contributors <https://jquery.org/>
  * Released under MIT license <https://lodash.com/license>
@@ -14,7 +14,10 @@ var HASH_UNDEFINED = '__lodash_hash_undefined__';
 var funcTag = '[object Function]',
     genTag = '[object GeneratorFunction]';
 
-/** Used to match `RegExp` [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns). */
+/**
+ * Used to match `RegExp`
+ * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns).
+ */
 var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;
 
 /** Used to detect host constructors (Safari). */
@@ -99,7 +102,8 @@ var funcToString = Function.prototype.toString;
 var hasOwnProperty = objectProto.hasOwnProperty;
 
 /**
- * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring)
  * of values.
  */
 var objectToString = objectProto.toString;
@@ -118,7 +122,7 @@ var Map = getNative(root, 'Map'),
     nativeCreate = getNative(Object, 'create');
 
 /**
- * Creates an hash object.
+ * Creates a hash object.
  *
  * @private
  * @constructor
@@ -402,6 +406,25 @@ function isKeyable(value) {
     (type == 'string' && value != '__proto__') || value == null;
 }
 
+/**
+ * Converts `func` to its source code.
+ *
+ * @private
+ * @param {Function} func The function to process.
+ * @returns {string} Returns the source code.
+ */
+function toSource(func) {
+  if (func != null) {
+    try {
+      return funcToString.call(func);
+    } catch (e) {}
+    try {
+      return (func + '');
+    } catch (e) {}
+  }
+  return '';
+}
+
 /**
  * Performs a
  * [`SameValueZero`](http://ecma-international.org/ecma-262/6.0/#sec-samevaluezero)
@@ -465,8 +488,9 @@ function isFunction(value) {
 }
 
 /**
- * Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
- * (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
+ * Checks if `value` is the
+ * [language type](http://www.ecma-international.org/ecma-262/6.0/#sec-ecmascript-language-types)
+ * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
  *
  * @static
  * @memberOf _
@@ -493,34 +517,6 @@ function isObject(value) {
   return !!value && (type == 'object' || type == 'function');
 }
 
-/**
- * Checks if `value` is object-like. A value is object-like if it's not `null`
- * and has a `typeof` result of "object".
- *
- * @static
- * @memberOf _
- * @since 4.0.0
- * @category Lang
- * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
- * @example
- *
- * _.isObjectLike({});
- * // => true
- *
- * _.isObjectLike([1, 2, 3]);
- * // => true
- *
- * _.isObjectLike(_.noop);
- * // => false
- *
- * _.isObjectLike(null);
- * // => false
- */
-function isObjectLike(value) {
-  return !!value && typeof value == 'object';
-}
-
 /**
  * Checks if `value` is a native function.
  *
@@ -540,14 +536,11 @@ function isObjectLike(value) {
  * // => false
  */
 function isNative(value) {
-  if (value == null) {
+  if (!isObject(value)) {
     return false;
   }
-  if (isFunction(value)) {
-    return reIsNative.test(funcToString.call(value));
-  }
-  return isObjectLike(value) &&
-    (isHostObject(value) ? reIsNative : reIsHostCtor).test(value);
+  var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor;
+  return pattern.test(toSource(value));
 }
 
 module.exports = MapCache;
diff --git a/lodash._mapcache/package.json b/lodash._mapcache/package.json
index acc29d09f..4bd4bad7d 100644
--- a/lodash._mapcache/package.json
+++ b/lodash._mapcache/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lodash._mapcache",
-  "version": "4.1.4",
+  "version": "4.1.5",
   "description": "The internal lodash function `MapCache` exported as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",
diff --git a/lodash.keysin/README.md b/lodash.keysin/README.md
index 7dfa7e3e7..f0158bce7 100644
--- a/lodash.keysin/README.md
+++ b/lodash.keysin/README.md
@@ -1,4 +1,4 @@
-# lodash.keysin v4.1.4
+# lodash.keysin v4.1.5
 
 The [lodash](https://lodash.com/) method `_.keysIn` exported as a [Node.js](https://nodejs.org/) module.
 
@@ -15,4 +15,4 @@ In Node.js:
 var keysIn = require('lodash.keysin');
 ```
 
-See the [documentation](https://lodash.com/docs#keysIn) or [package source](https://github.com/lodash/lodash/blob/4.1.4-npm-packages/lodash.keysin) for more details.
+See the [documentation](https://lodash.com/docs#keysIn) or [package source](https://github.com/lodash/lodash/blob/4.1.5-npm-packages/lodash.keysin) for more details.
diff --git a/lodash.keysin/index.js b/lodash.keysin/index.js
index 9d34a0f66..a8bd90669 100644
--- a/lodash.keysin/index.js
+++ b/lodash.keysin/index.js
@@ -19,43 +19,27 @@ var argsTag = '[object Arguments]',
 /** Used to detect unsigned integer values. */
 var reIsUint = /^(?:0|[1-9]\d*)$/;
 
-/** Used to determine if values are of the language type `Object`. */
-var objectTypes = {
-  'function': true,
-  'object': true
-};
-
-/** Detect free variable `exports`. */
-var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType)
-  ? exports
-  : undefined;
-
-/** Detect free variable `module`. */
-var freeModule = (objectTypes[typeof module] && module && !module.nodeType)
-  ? module
-  : undefined;
-
 /** Detect free variable `global` from Node.js. */
-var freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global);
+var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
 
 /** Detect free variable `self`. */
-var freeSelf = checkGlobal(objectTypes[typeof self] && self);
+var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
 
-/** Detect free variable `window`. */
-var freeWindow = checkGlobal(objectTypes[typeof window] && window);
-
-/** Detect `this` as the global object. */
-var thisGlobal = checkGlobal(objectTypes[typeof this] && this);
+/** Used as a reference to the global object. */
+var root = freeGlobal || freeSelf || Function('return this')();
 
 /**
- * Used as a reference to the global object.
+ * The base implementation of `_.property` without support for deep paths.
  *
- * The `this` value is used if it's the global object to avoid Greasemonkey's
- * restricted `window` object, otherwise the `window` object is used.
+ * @private
+ * @param {string} key The key of the property to get.
+ * @returns {Function} Returns the new accessor function.
  */
-var root = freeGlobal ||
-  ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) ||
-    freeSelf || thisGlobal || Function('return this')();
+function baseProperty(key) {
+  return function(object) {
+    return object == null ? undefined : object[key];
+  };
+}
 
 /**
  * The base implementation of `_.times` without support for iteratee shorthands
@@ -76,17 +60,6 @@ function baseTimes(n, iteratee) {
   return result;
 }
 
-/**
- * Checks if `value` is a global object.
- *
- * @private
- * @param {*} value The value to check.
- * @returns {null|Object} Returns `value` if it's a global object, else `null`.
- */
-function checkGlobal(value) {
-  return (value && value.Object === Object) ? value : null;
-}
-
 /**
  * Converts `iterator` to an array.
  *
@@ -147,19 +120,6 @@ if (enumerate && !propertyIsEnumerable.call({ 'valueOf': 1 }, 'valueOf')) {
   };
 }
 
-/**
- * The base implementation of `_.property` without support for deep paths.
- *
- * @private
- * @param {string} key The key of the property to get.
- * @returns {Function} Returns the new accessor function.
- */
-function baseProperty(key) {
-  return function(object) {
-    return object == null ? undefined : object[key];
-  };
-}
-
 /**
  * Gets the "length" property value of `object`.
  *
@@ -227,7 +187,7 @@ function isPrototype(value) {
  * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
+ * @returns {boolean} Returns `true` if `value` is an `arguments` object,
  *  else `false`.
  * @example
  *
@@ -249,11 +209,9 @@ function isArguments(value) {
  * @static
  * @memberOf _
  * @since 0.1.0
- * @type {Function}
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- *  else `false`.
+ * @returns {boolean} Returns `true` if `value` is an array, else `false`.
  * @example
  *
  * _.isArray([1, 2, 3]);
@@ -336,8 +294,7 @@ function isArrayLikeObject(value) {
  * @since 0.1.0
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- *  else `false`.
+ * @returns {boolean} Returns `true` if `value` is a function, else `false`.
  * @example
  *
  * _.isFunction(_);
@@ -452,8 +409,7 @@ function isObjectLike(value) {
  * @memberOf _
  * @category Lang
  * @param {*} value The value to check.
- * @returns {boolean} Returns `true` if `value` is correctly classified,
- *  else `false`.
+ * @returns {boolean} Returns `true` if `value` is a string, else `false`.
  * @example
  *
  * _.isString('abc');
diff --git a/lodash.keysin/package.json b/lodash.keysin/package.json
index 6b8e96801..b661992b1 100644
--- a/lodash.keysin/package.json
+++ b/lodash.keysin/package.json
@@ -1,6 +1,6 @@
 {
   "name": "lodash.keysin",
-  "version": "4.1.4",
+  "version": "4.1.5",
   "description": "The lodash method `_.keysIn` exported as a module.",
   "homepage": "https://lodash.com/",
   "icon": "https://lodash.com/icon.svg",