diff --git a/build.js b/build.js
index 9e77d68e8..a65315a9c 100644
--- a/build.js
+++ b/build.js
@@ -832,10 +832,11 @@
     };
 
     var getDepPath = function(dep, fromPath) {
-      fromPath || (fromPath = '');
-
+      if (dep == 'require') {
+        return dep;
+      }
       var toPath = getPath(dep),
-          relative = path.relative(fromPath, toPath).replace(RegExp(path.sepEscaped, 'g'), sep);
+          relative = path.relative(fromPath || '', toPath).replace(RegExp(path.sepEscaped, 'g'), sep);
 
       if (relative.charAt(0) != '.') {
         relative = '.' + (relative ? sep + relative : '');
@@ -857,19 +858,26 @@
 
     // create modules for each identifier
     identifiers.forEach(function(identifier) {
-      var circDeps = circularDependencyMap[identifier];
+      var circDeps = circularDependencyMap[identifier],
+          modulePath = getPath(identifier),
+          iife = [];
 
       var deps = _.difference(
         getDependencies(identifier, true)
-        .concat(propDependencyMap[identifier] || [])
-        .concat(varDependencyMap[identifier] || [])
+        .concat(propDependencyMap[identifier] || arrayRef)
+        .concat(varDependencyMap[identifier] || arrayRef)
       , circDeps)
       .sort();
 
-      var modulePath = getPath(identifier),
-          depArgs = deps.join(', '),
-          depPaths = '[' + (deps.length ? "'" + getDepPaths(deps, modulePath).join("', '") + "'" : '') + '], ',
-          iife = [];
+      if (circDeps) {
+        deps.unshift('require');
+      }
+      var depArgs = deps.join(', ');
+
+      if (circDeps) {
+        push.apply(deps, circDeps);
+      }
+      var depPaths = '[' + (deps.length ? "'" + getDepPaths(deps, modulePath).join("', '") + "'" : '') + '], ';
 
       if (isAMD) {
         iife.push(
diff --git a/lodash.js b/lodash.js
index 6488d56e9..71677b2da 100644
--- a/lodash.js
+++ b/lodash.js
@@ -1152,7 +1152,7 @@
       // return the compiled function
       return factory(
         errorClass, errorProto, hasOwnProperty, indicatorObject, isArguments,
-        isArray, isString, keys, lodash, objectProto, objectTypes, nonEnumProps,
+        isArray, isString, data.useKeys && keys, lodash, objectProto, objectTypes, nonEnumProps,
         stringClass, stringProto, toString
       );
     }
@@ -1315,7 +1315,8 @@
       'args': 'object',
       'init': '[]',
       'top': 'if (!(objectTypes[typeof object])) return result',
-      'loop': 'result.push(index)'
+      'loop': 'result.push(index)',
+      'useKeys': false
     });
 
     /**
diff --git a/vendor/requirejs/require.js b/vendor/requirejs/require.js
index 2109a2514..52c2b076b 100644
--- a/vendor/requirejs/require.js
+++ b/vendor/requirejs/require.js
@@ -1,5 +1,5 @@
 /** vim: et:ts=4:sw=4:sts=4
- * @license RequireJS 2.1.6 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
+ * @license RequireJS 2.1.8 Copyright (c) 2010-2012, The Dojo Foundation All Rights Reserved.
  * Available via the MIT or new BSD license.
  * see: http://github.com/jrburke/requirejs for details
  */
@@ -12,7 +12,7 @@ var requirejs, require, define;
 (function (global) {
     var req, s, head, baseElement, dataMain, src,
         interactiveScript, currentlyAddingScript, mainScript, subPath,
-        version = '2.1.6',
+        version = '2.1.8',
         commentRegExp = /(\/\*([\s\S]*?)\*\/|([^:]|^)\/\/(.*)$)/mg,
         cjsRequireRegExp = /[^.]\s*require\s*\(\s*["']([^'"\s]+)["']\s*\)/g,
         jsSuffixRegExp = /\.js$/,
@@ -1794,6 +1794,19 @@ var requirejs, require, define;
      */
     req.onError = defaultOnError;
 
+    /**
+     * Creates the node for the load command. Only used in browser envs.
+     */
+    req.createNode = function (config, moduleName, url) {
+        var node = config.xhtml ?
+                document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
+                document.createElement('script');
+        node.type = config.scriptType || 'text/javascript';
+        node.charset = 'utf-8';
+        node.async = true;
+        return node;
+    };
+
     /**
      * Does the request to load a module for the browser case.
      * Make this a separate function to allow other environments
@@ -1808,12 +1821,7 @@ var requirejs, require, define;
             node;
         if (isBrowser) {
             //In the browser so use a script tag
-            node = config.xhtml ?
-                    document.createElementNS('http://www.w3.org/1999/xhtml', 'html:script') :
-                    document.createElement('script');
-            node.type = config.scriptType || 'text/javascript';
-            node.charset = 'utf-8';
-            node.async = true;
+            node = req.createNode(config, moduleName, url);
 
             node.setAttribute('data-requirecontext', context.contextName);
             node.setAttribute('data-requiremodule', moduleName);