diff --git a/Makefile b/Makefile
index 885df0a94..691a1a860 100644
--- a/Makefile
+++ b/Makefile
@@ -124,3 +124,6 @@ D3_FILES = \
 js/lib/d3.v3.js: $(D3_FILES)
 	node_modules/.bin/smash $(D3_FILES) > $@
 	@echo 'd3 rebuilt. Please reapply 7e2485d, 4da529f, and 223974d'
+
+js/lib/lodash.js:
+	node_modules/.bin/lodash --debug --output $@ include="any,assign,bind,clone,compact,contains,debounce,difference,each,every,extend,filter,find,first,forEach,groupBy,indexOf,intersection,isEmpty,isEqual,isFunction,keys,last,map,omit,pairs,pluck,reject,some,throttle,union,uniq,unique,values,without,flatten,value,chain,cloneDeep,merge,pick" exports="global,node"
diff --git a/js/lib/lodash.js b/js/lib/lodash.js
index cda72370c..4c8cb489e 100644
--- a/js/lib/lodash.js
+++ b/js/lib/lodash.js
@@ -1,7 +1,7 @@
 /**
  * @license
  * Lo-Dash 2.3.0 (Custom Build) <http://lodash.com/>
- * Build: `lodash include="any,assign,bind,clone,compact,contains,debounce,difference,each,every,extend,filter,find,first,forEach,groupBy,indexOf,intersection,isEmpty,isEqual,isFunction,keys,last,map,omit,pairs,pluck,reject,some,throttle,union,uniq,unique,values,without,flatten,value,chain,cloneDeep,merge" exports="global,node"`
+ * Build: `lodash --debug --output js/lib/lodash.js include="any,assign,bind,clone,compact,contains,debounce,difference,each,every,extend,filter,find,first,forEach,groupBy,indexOf,intersection,isEmpty,isEqual,isFunction,keys,last,map,omit,pairs,pluck,reject,some,throttle,union,uniq,unique,values,without,flatten,value,chain,cloneDeep,merge,pick" exports="global,node"`
  * Copyright 2012-2013 The Dojo Foundation <http://dojofoundation.org/>
  * Based on Underscore.js 1.5.2 <http://underscorejs.org/LICENSE>
  * Copyright 2009-2013 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
@@ -2304,6 +2304,57 @@
     return result;
   }
 
+  /**
+   * Creates a shallow clone of `object` composed of the specified properties.
+   * Property names may be specified as individual arguments or as arrays of
+   * property names. If a callback is provided it will be executed for each
+   * property of `object` picking the properties the callback returns truey
+   * for. The callback is bound to `thisArg` and invoked with three arguments;
+   * (value, key, object).
+   *
+   * @static
+   * @memberOf _
+   * @category Objects
+   * @param {Object} object The source object.
+   * @param {Function|...string|string[]} [callback] The function called per
+   *  iteration or property names to pick, specified as individual property
+   *  names or arrays of property names.
+   * @param {*} [thisArg] The `this` binding of `callback`.
+   * @returns {Object} Returns an object composed of the picked properties.
+   * @example
+   *
+   * _.pick({ 'name': 'fred', '_userid': 'fred1' }, 'name');
+   * // => { 'name': 'fred' }
+   *
+   * _.pick({ 'name': 'fred', '_userid': 'fred1' }, function(value, key) {
+   *   return key.charAt(0) != '_';
+   * });
+   * // => { 'name': 'fred' }
+   */
+  function pick(object, callback, thisArg) {
+    var result = {};
+    if (typeof callback != 'function') {
+      var index = -1,
+          props = baseFlatten(arguments, true, false, 1),
+          length = isObject(object) ? props.length : 0;
+
+      while (++index < length) {
+        var key = props[index];
+        if (key in object) {
+          result[key] = object[key];
+        }
+      }
+    } else {
+      callback = lodash.createCallback(callback, thisArg, 3);
+      forIn(object, function(value, key, object) {
+        if (callback(value, key, object)) {
+          result[key] = value;
+        }
+      });
+    }
+    return result;
+  }
+
   /**
    * Creates an array composed of the own enumerable property values of `object`.
    *
@@ -3830,6 +3881,7 @@
   lodash.merge = merge;
   lodash.omit = omit;
   lodash.pairs = pairs;
+  lodash.pick = pick;
   lodash.pluck = pluck;
   lodash.reject = reject;
   lodash.throttle = throttle;
diff --git a/package.json b/package.json
index aa5f36818..92653c600 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
   "devDependencies": {
     "d3": "3.4.6",
     "smash": "0.0",
+    "lodash-cli": "2.3.0",
     "uglify-js": "~2.2.5",
     "maki": "0.4",
     "jshint": "2.3.0",