diff --git a/1-hello-world/app.js b/1-hello-world/app.js
index 4d99aead3e..84f84b97d1 100644
--- a/1-hello-world/app.js
+++ b/1-hello-world/app.js
@@ -20,7 +20,7 @@ var app = express();
 
 // [START hello_world]
 // Say hello!
-app.get('/', function(req, res) {
+app.get('/', function (req, res) {
   res.status(200).send('Hello, world!');
 });
 // [END hello_world]
diff --git a/2-structured-data/books/model-cloudsql.js b/2-structured-data/books/model-cloudsql.js
index 1ae0d69563..94efa810a6 100644
--- a/2-structured-data/books/model-cloudsql.js
+++ b/2-structured-data/books/model-cloudsql.js
@@ -16,7 +16,7 @@
 var extend = require('lodash').assign;
 var mysql = require('mysql');
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   function getConnection() {
     return mysql.createConnection(extend({
@@ -30,7 +30,7 @@ module.exports = function(config) {
     var connection = getConnection();
     connection.query(
       'SELECT * FROM `books` LIMIT ? OFFSET ?', [limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -43,7 +43,7 @@ module.exports = function(config) {
   // [START create]
   function create(data, cb) {
     var connection = getConnection();
-    connection.query('INSERT INTO `books` SET ?', data, function(err, res) {
+    connection.query('INSERT INTO `books` SET ?', data, function (err, res) {
       if (err) { return cb(err); }
       read(res.insertId, cb);
     });
@@ -54,7 +54,7 @@ module.exports = function(config) {
   function read(id, cb) {
     var connection = getConnection();
     connection.query(
-      'SELECT * FROM `books` WHERE `id` = ?', id, function(err, results) {
+      'SELECT * FROM `books` WHERE `id` = ?', id, function (err, results) {
         if (err) { return cb(err); }
         if (!results.length) {
           return cb({
@@ -71,7 +71,7 @@ module.exports = function(config) {
   function update(id, data, cb) {
     var connection = getConnection();
     connection.query(
-      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function(err) {
+      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function (err) {
         if (err) { return cb(err); }
         read(id, cb);
       });
@@ -95,7 +95,6 @@ module.exports = function(config) {
   };
 };
 
-
 if (!module.parent) {
   var prompt = require('prompt');
   prompt.start();
@@ -104,7 +103,7 @@ if (!module.parent) {
     'Running this script directly will allow you to initialize your mysql ' +
     'database.\n This script will not modify any existing tables.\n');
 
-  prompt.get(['host', 'user', 'password'], function(err, result) {
+  prompt.get(['host', 'user', 'password'], function (err, result) {
     if (err) { return; }
     createSchema(result);
   });
@@ -129,7 +128,7 @@ function createSchema(config) {
     '`createdBy` VARCHAR(255) NULL, ' +
     '`createdById` VARCHAR(255) NULL, ' +
     'PRIMARY KEY (`id`));',
-    function(err) {
+    function (err) {
       if (err) { throw err; }
       console.log('Successfully created schema');
       connection.end();
diff --git a/2-structured-data/books/model-datastore.js b/2-structured-data/books/model-datastore.js
index 5dc682cf5c..9931441cd8 100644
--- a/2-structured-data/books/model-datastore.js
+++ b/2-structured-data/books/model-datastore.js
@@ -15,15 +15,13 @@
 
 var gcloud = require('gcloud');
 
-
-module.exports = function(config) {
+module.exports = function (config) {
 
   // [START config]
-  var ds = gcloud.datastore.dataset(config.gcloud);
+  var ds = gcloud.datastore(config.gcloud);
   var kind = 'Book';
   // [END config]
 
-
   // Translates from Datastore's entity format to
   // the format expected by the application.
   //
@@ -45,7 +43,6 @@ module.exports = function(config) {
     return obj.data;
   }
 
-
   // Translates from the application's format to the datastore's
   // extended entity property format. It also handles marking any
   // specified properties as non-indexed. Does not translate the key.
@@ -72,7 +69,7 @@ module.exports = function(config) {
   function toDatastore(obj, nonIndexed) {
     nonIndexed = nonIndexed || [];
     var results = [];
-    Object.keys(obj).forEach(function(k) {
+    Object.keys(obj).forEach(function (k) {
       if (obj[k] === undefined) { return; }
       results.push({
         name: k,
@@ -83,7 +80,6 @@ module.exports = function(config) {
     return results;
   }
 
-
   // Lists all books in the Datastore sorted alphabetically by title.
   // The ``limit`` argument determines the maximum amount of results to
   // return per page. The ``token`` argument allows requesting additional
@@ -95,7 +91,7 @@ module.exports = function(config) {
       .order('title')
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -103,7 +99,6 @@ module.exports = function(config) {
   }
   // [END list]
 
-
   // Creates a new book or updates an existing book with new data. The provided
   // data is automatically translated into Datastore format. The book will be
   // queued for background processing.
@@ -123,7 +118,7 @@ module.exports = function(config) {
 
     ds.save(
       entity,
-      function(err) {
+      function (err) {
         data.id = entity.key.id;
         cb(err, err ? null : data);
       }
@@ -131,10 +126,9 @@ module.exports = function(config) {
   }
   // [END update]
 
-
   function read(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
-    ds.get(key, function(err, entity) {
+    ds.get(key, function (err, entity) {
       if (err) { return cb(err); }
       if (!entity) {
         return cb({
@@ -146,16 +140,14 @@ module.exports = function(config) {
     });
   }
 
-
   function _delete(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
     ds.delete(key, cb);
   }
 
-
   // [START exports]
   return {
-    create: function(data, cb) {
+    create: function (data, cb) {
       update(null, data, cb);
     },
     read: read,
@@ -164,5 +156,4 @@ module.exports = function(config) {
     list: list
   };
   // [END exports]
-
 };
diff --git a/2-structured-data/package.json b/2-structured-data/package.json
index a9a0474a9a..9d137e25e4 100644
--- a/2-structured-data/package.json
+++ b/2-structured-data/package.json
@@ -32,11 +32,11 @@
   "dependencies": {
     "body-parser": "^1.15.0",
     "express": "^4.13.4",
-    "gcloud": "^0.28.0",
+    "gcloud": "^0.30.2",
     "jade": "^1.11.0",
-    "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "kerberos": "^0.0.19",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0"
   },
diff --git a/3-binary-data/books/model-cloudsql.js b/3-binary-data/books/model-cloudsql.js
index e0278ac8c6..80edb89a14 100644
--- a/3-binary-data/books/model-cloudsql.js
+++ b/3-binary-data/books/model-cloudsql.js
@@ -17,7 +17,7 @@ var extend = require('lodash').assign;
 var mysql = require('mysql');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   function getConnection() {
     return mysql.createConnection(extend({
@@ -31,7 +31,7 @@ module.exports = function(config) {
     var connection = getConnection();
     connection.query(
       'SELECT * FROM `books` LIMIT ? OFFSET ?', [limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -43,7 +43,7 @@ module.exports = function(config) {
 
   function create(data, cb) {
     var connection = getConnection();
-    connection.query('INSERT INTO `books` SET ?', data, function(err, res) {
+    connection.query('INSERT INTO `books` SET ?', data, function (err, res) {
       if (err) { return cb(err); }
       read(res.insertId, cb);
     });
@@ -54,7 +54,7 @@ module.exports = function(config) {
   function read(id, cb) {
     var connection = getConnection();
     connection.query(
-      'SELECT * FROM `books` WHERE `id` = ?', id, function(err, results) {
+      'SELECT * FROM `books` WHERE `id` = ?', id, function (err, results) {
         if (err) { return cb(err); }
         if (!results.length) {
           return cb({
@@ -71,7 +71,7 @@ module.exports = function(config) {
   function update(id, data, cb) {
     var connection = getConnection();
     connection.query(
-      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function(err) {
+      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function (err) {
         if (err) { return cb(err); }
         read(id, cb);
       });
@@ -106,7 +106,7 @@ if (!module.parent) {
     'Running this script directly will allow you to initialize your mysql ' +
     'database.\n This script will not modify any existing tables.\n');
 
-  prompt.get(['host', 'user', 'password'], function(err, result) {
+  prompt.get(['host', 'user', 'password'], function (err, result) {
     if (err) { return; }
     createSchema(result);
   });
@@ -132,7 +132,7 @@ function createSchema(config) {
     '`createdBy` VARCHAR(255) NULL, ' +
     '`createdById` VARCHAR(255) NULL, ' +
     'PRIMARY KEY (`id`));',
-    function(err) {
+    function (err) {
       if (err) { throw err; }
       console.log('Successfully created schema');
       connection.end();
diff --git a/3-binary-data/books/model-datastore.js b/3-binary-data/books/model-datastore.js
index 1979693049..2b2ddd80c6 100644
--- a/3-binary-data/books/model-datastore.js
+++ b/3-binary-data/books/model-datastore.js
@@ -16,9 +16,9 @@
 var gcloud = require('gcloud');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
-  var ds = gcloud.datastore.dataset(config.gcloud);
+  var ds = gcloud.datastore(config.gcloud);
   var kind = 'Book';
 
 
@@ -70,7 +70,7 @@ module.exports = function(config) {
   function toDatastore(obj, nonIndexed) {
     nonIndexed = nonIndexed || [];
     var results = [];
-    Object.keys(obj).forEach(function(k) {
+    Object.keys(obj).forEach(function (k) {
       if (obj[k] === undefined) { return; }
       results.push({
         name: k,
@@ -92,7 +92,7 @@ module.exports = function(config) {
       .order('title')
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -118,7 +118,7 @@ module.exports = function(config) {
 
     ds.save(
       entity,
-      function(err) {
+      function (err) {
         data.id = entity.key.id;
         cb(err, err ? null : data);
       }
@@ -128,7 +128,7 @@ module.exports = function(config) {
 
   function read(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
-    ds.get(key, function(err, entity) {
+    ds.get(key, function (err, entity) {
       if (err) { return cb(err); }
       if (!entity) {
         return cb({
@@ -148,7 +148,7 @@ module.exports = function(config) {
 
 
   return {
-    create: function(data, cb) {
+    create: function (data, cb) {
       update(null, data, cb);
     },
     read: read,
diff --git a/3-binary-data/lib/images.js b/3-binary-data/lib/images.js
index 4aa78eb828..919b566ce0 100644
--- a/3-binary-data/lib/images.js
+++ b/3-binary-data/lib/images.js
@@ -16,7 +16,7 @@
 var gcloud = require('gcloud');
 
 
-module.exports = function(gcloudConfig, cloudStorageBucket) {
+module.exports = function (gcloudConfig, cloudStorageBucket) {
 
   var storage = gcloud.storage(gcloudConfig);
   var bucket = storage.bucket(cloudStorageBucket);
@@ -46,12 +46,12 @@ module.exports = function(gcloudConfig, cloudStorageBucket) {
     var file = bucket.file(gcsname);
     var stream = file.createWriteStream();
 
-    stream.on('error', function(err) {
+    stream.on('error', function (err) {
       req.file.cloudStorageError = err;
       next(err);
     });
 
-    stream.on('finish', function() {
+    stream.on('finish', function () {
       req.file.cloudStorageObject = gcsname;
       req.file.cloudStoragePublicUrl = getPublicUrl(gcsname);
       next();
@@ -71,7 +71,7 @@ module.exports = function(gcloudConfig, cloudStorageBucket) {
   var multer = require('multer')({
     inMemory: true,
     fileSize: 5 * 1024 * 1024, // no larger than 5mb
-    rename: function(fieldname, filename) {
+    rename: function (fieldname, filename) {
       // generate a unique filename
       return filename.replace(/\W+/g, '-').toLowerCase() + Date.now();
     }
diff --git a/3-binary-data/package.json b/3-binary-data/package.json
index b3d783c007..eecc4e5b3d 100644
--- a/3-binary-data/package.json
+++ b/3-binary-data/package.json
@@ -32,11 +32,11 @@
   "dependencies": {
     "body-parser": "^1.15.0",
     "express": "^4.13.4",
-    "gcloud": "^0.28.0",
+    "gcloud": "^0.30.2",
     "jade": "^1.11.0",
-    "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "kerberos": "^0.0.19",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "multer": "^1.1.0",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0"
diff --git a/4-auth/books/crud.js b/4-auth/books/crud.js
index 5f1961250c..15fc9f4ce7 100644
--- a/4-auth/books/crud.js
+++ b/4-auth/books/crud.js
@@ -15,7 +15,7 @@
 
 var express = require('express');
 
-module.exports = function(model, images, oauth2) {
+module.exports = function (model, images, oauth2) {
 
   var router = express.Router();
 
diff --git a/4-auth/books/model-cloudsql.js b/4-auth/books/model-cloudsql.js
index 2df73df4a6..52447ec41f 100644
--- a/4-auth/books/model-cloudsql.js
+++ b/4-auth/books/model-cloudsql.js
@@ -17,7 +17,7 @@ var extend = require('lodash').assign;
 var mysql = require('mysql');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   function getConnection() {
     return mysql.createConnection(extend({
@@ -31,7 +31,7 @@ module.exports = function(config) {
     var connection = getConnection();
     connection.query(
       'SELECT * FROM `books` LIMIT ? OFFSET ?', [limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -48,7 +48,7 @@ module.exports = function(config) {
     connection.query(
       'SELECT * FROM `books` WHERE `createdById` = ? LIMIT ? OFFSET ?',
       [userId, limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -60,7 +60,7 @@ module.exports = function(config) {
 
   function create(data, cb) {
     var connection = getConnection();
-    connection.query('INSERT INTO `books` SET ?', data, function(err, res) {
+    connection.query('INSERT INTO `books` SET ?', data, function (err, res) {
       if (err) { return cb(err); }
       read(res.insertId, cb);
     });
@@ -71,7 +71,7 @@ module.exports = function(config) {
   function read(id, cb) {
     var connection = getConnection();
     connection.query(
-      'SELECT * FROM `books` WHERE `id` = ?', id, function(err, results) {
+      'SELECT * FROM `books` WHERE `id` = ?', id, function (err, results) {
         if (err) { return cb(err); }
         if (!results.length) {
           return cb({
@@ -88,7 +88,7 @@ module.exports = function(config) {
   function update(id, data, cb) {
     var connection = getConnection();
     connection.query(
-      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function(err) {
+      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function (err) {
         if (err) { return cb(err); }
         read(id, cb);
       });
@@ -124,7 +124,7 @@ if (!module.parent) {
     'Running this script directly will allow you to initialize your mysql ' +
     'database.\n This script will not modify any existing tables.\n');
 
-  prompt.get(['host', 'user', 'password'], function(err, result) {
+  prompt.get(['host', 'user', 'password'], function (err, result) {
     if (err) { return; }
     createSchema(result);
   });
@@ -150,7 +150,7 @@ function createSchema(config) {
     '`createdBy` VARCHAR(255) NULL, ' +
     '`createdById` VARCHAR(255) NULL, ' +
     'PRIMARY KEY (`id`));',
-    function(err) {
+    function (err) {
       if (err) { throw err; }
       console.log('Successfully created schema');
       connection.end();
diff --git a/4-auth/books/model-datastore.js b/4-auth/books/model-datastore.js
index 2fac0d88de..5f9562889b 100644
--- a/4-auth/books/model-datastore.js
+++ b/4-auth/books/model-datastore.js
@@ -15,13 +15,11 @@
 
 var gcloud = require('gcloud');
 
+module.exports = function (config) {
 
-module.exports = function(config) {
-
-  var ds = gcloud.datastore.dataset(config.gcloud);
+  var ds = gcloud.datastore(config.gcloud);
   var kind = 'Book';
 
-
   // Translates from Datastore's entity format to
   // the format expected by the application.
   //
@@ -43,7 +41,6 @@ module.exports = function(config) {
     return obj.data;
   }
 
-
   // Translates from the application's format to the datastore's
   // extended entity property format. It also handles marking any
   // specified properties as non-indexed. Does not translate the key.
@@ -70,7 +67,7 @@ module.exports = function(config) {
   function toDatastore(obj, nonIndexed) {
     nonIndexed = nonIndexed || [];
     var results = [];
-    Object.keys(obj).forEach(function(k) {
+    Object.keys(obj).forEach(function (k) {
       if (obj[k] === undefined) { return; }
       results.push({
         name: k,
@@ -81,7 +78,6 @@ module.exports = function(config) {
     return results;
   }
 
-
   // Lists all books in the Datastore sorted alphabetically by title.
   // The ``limit`` argument determines the maximum amount of results to
   // return per page. The ``token`` argument allows requesting additional
@@ -92,7 +88,7 @@ module.exports = function(config) {
       .order('title')
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -108,7 +104,7 @@ module.exports = function(config) {
       .limit(limit)
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -116,7 +112,6 @@ module.exports = function(config) {
   }
   // [END listby]
 
-
   // Creates a new book or updates an existing book with new data. The provided
   // data is automatically translated into Datastore format. The book will be
   // queued for background processing.
@@ -135,17 +130,16 @@ module.exports = function(config) {
 
     ds.save(
       entity,
-      function(err) {
+      function (err) {
         data.id = entity.key.id;
         cb(err, err ? null : data);
       }
     );
   }
 
-
   function read(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
-    ds.get(key, function(err, entity) {
+    ds.get(key, function (err, entity) {
       if (err) { return cb(err); }
       if (!entity) {
         return cb({
@@ -157,15 +151,13 @@ module.exports = function(config) {
     });
   }
 
-
   function _delete(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
     ds.delete(key, cb);
   }
 
-
   return {
-    create: function(data, cb) {
+    create: function (data, cb) {
       update(null, data, cb);
     },
     read: read,
@@ -174,5 +166,4 @@ module.exports = function(config) {
     list: list,
     listBy: listBy
   };
-
 };
diff --git a/4-auth/lib/images.js b/4-auth/lib/images.js
index f2d17de98e..ced0b145c9 100644
--- a/4-auth/lib/images.js
+++ b/4-auth/lib/images.js
@@ -16,7 +16,7 @@
 var gcloud = require('gcloud');
 
 
-module.exports = function(gcloudConfig, cloudStorageBucket) {
+module.exports = function (gcloudConfig, cloudStorageBucket) {
 
   var storage = gcloud.storage(gcloudConfig);
   var bucket = storage.bucket(cloudStorageBucket);
@@ -42,12 +42,12 @@ module.exports = function(gcloudConfig, cloudStorageBucket) {
     var file = bucket.file(gcsname);
     var stream = file.createWriteStream();
 
-    stream.on('error', function(err) {
+    stream.on('error', function (err) {
       req.file.cloudStorageError = err;
       next(err);
     });
 
-    stream.on('finish', function() {
+    stream.on('finish', function () {
       req.file.cloudStorageObject = gcsname;
       req.file.cloudStoragePublicUrl = getPublicUrl(gcsname);
       next();
@@ -64,7 +64,7 @@ module.exports = function(gcloudConfig, cloudStorageBucket) {
   var multer = require('multer')({
     inMemory: true,
     fileSize: 5 * 1024 * 1024, // no larger than 5mb
-    rename: function(fieldname, filename) {
+    rename: function (fieldname, filename) {
       // generate a unique filename
       return filename.replace(/\W+/g, '-').toLowerCase() + Date.now();
     }
diff --git a/4-auth/lib/oauth2.js b/4-auth/lib/oauth2.js
index b514ebc52b..8244ec0e0e 100644
--- a/4-auth/lib/oauth2.js
+++ b/4-auth/lib/oauth2.js
@@ -37,12 +37,12 @@
 //
 //     app.use(oauth2.router);
 //
-//     app.get('/users_only', oauth2.required, function(req, res){
+//     app.get('/users_only', oauth2.required, function (req, res){
 //       // only logged-in users can access.
 //       // other users are redirected to the login page.
 //     });
 //
-//     app.get('/aware', oauth2.aware, function(req, res){
+//     app.get('/aware', oauth2.aware, function (req, res){
 //       if(req.oauth2client) // user is logged in.
 //     });
 
@@ -52,7 +52,7 @@ var googleapis = require('googleapis');
 var express = require('express');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   var router = express.Router();
 
@@ -117,7 +117,7 @@ module.exports = function(config) {
   // the application and then return them to the original URL they
   // requested.
   function authRequired(req, res, next) {
-    authAware(req, res, function() {
+    authAware(req, res, function () {
       if (!req.oauth2client) {
         req.session.oauth2return = req.originalUrl;
         return res.redirect('/oauth2/authorize');
@@ -148,7 +148,7 @@ module.exports = function(config) {
   // when sending a user to this URL then they will be redirected to that
   // URL when the flow is finished.
   // [START authorize]
-  router.get('/oauth2/authorize', function(req, res) {
+  router.get('/oauth2/authorize', function (req, res) {
     /* jshint camelcase: false */
     var stateToken = generateStateToken();
     var authorizeUrl = getClient().generateAuthUrl({
@@ -170,18 +170,18 @@ module.exports = function(config) {
   // and then redirect the user to the `return` URL specified to
   // `/oauth2/authorize`.
   // [START callback]
-  router.get('/oauth2callback', function(req, res) {
+  router.get('/oauth2callback', function (req, res) {
     if (!req.query.code || req.query.state !== req.session.oauth2statetoken) {
       return res.status(400).send('Invalid auth code or state token.');
     }
-    getClient().getToken(req.query.code, function(err, tokens) {
+    getClient().getToken(req.query.code, function (err, tokens) {
       if (err) { return res.status(400).send(err.message); }
       req.session.oauth2tokens = tokens;
 
       /* Get the user's info and store it in the session */
       var client = getClient();
       client.setCredentials(tokens);
-      getUserProfile(client, function(err, profile) {
+      getUserProfile(client, function (err, profile) {
         if (err) { return res.status('500').send(err.message); }
         req.session.profile = {
           id: profile.id,
@@ -198,7 +198,7 @@ module.exports = function(config) {
 
   // Deletes the user's credentials and profile from the session.
   // This does not revoke any active tokens.
-  router.get('/oauth2/logout', function(req, res) {
+  router.get('/oauth2/logout', function (req, res) {
     delete req.session.oauth2tokens;
     delete req.session.profile;
     res.redirect(req.query.return || req.session.oauth2return || '/');
diff --git a/4-auth/package.json b/4-auth/package.json
index 96e651cbe4..748129f804 100644
--- a/4-auth/package.json
+++ b/4-auth/package.json
@@ -34,12 +34,12 @@
     "body-parser": "^1.15.0",
     "cookie-session": "^2.0.0-alpha.1",
     "express": "^4.13.4",
-    "gcloud": "^0.28.0",
-    "googleapis": "^2.1.7",
+    "gcloud": "^0.30.2",
+    "googleapis": "^4.0.0",
     "jade": "^1.11.0",
-    "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "kerberos": "^0.0.19",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "multer": "^1.1.0",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0"
diff --git a/5-logging/books/model-cloudsql.js b/5-logging/books/model-cloudsql.js
index f4bb94ae8b..6f89ddbff2 100644
--- a/5-logging/books/model-cloudsql.js
+++ b/5-logging/books/model-cloudsql.js
@@ -17,7 +17,7 @@ var extend = require('lodash').assign;
 var mysql = require('mysql');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   function getConnection() {
     return mysql.createConnection(extend({
@@ -31,7 +31,7 @@ module.exports = function(config) {
     var connection = getConnection();
     connection.query(
       'SELECT * FROM `books` LIMIT ? OFFSET ?', [limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -47,7 +47,7 @@ module.exports = function(config) {
     connection.query(
       'SELECT * FROM `books` WHERE `createdById` = ? LIMIT ? OFFSET ?',
       [userId, limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -58,7 +58,7 @@ module.exports = function(config) {
 
   function create(data, cb) {
     var connection = getConnection();
-    connection.query('INSERT INTO `books` SET ?', data, function(err, res) {
+    connection.query('INSERT INTO `books` SET ?', data, function (err, res) {
       if (err) { return cb(err); }
       read(res.insertId, cb);
     });
@@ -69,7 +69,7 @@ module.exports = function(config) {
   function read(id, cb) {
     var connection = getConnection();
     connection.query(
-      'SELECT * FROM `books` WHERE `id` = ?', id, function(err, results) {
+      'SELECT * FROM `books` WHERE `id` = ?', id, function (err, results) {
         if (err) { return cb(err); }
         if (!results.length) {
           return cb({
@@ -86,7 +86,7 @@ module.exports = function(config) {
   function update(id, data, cb) {
     var connection = getConnection();
     connection.query(
-      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function(err) {
+      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function (err) {
         if (err) { return cb(err); }
         read(id, cb);
       });
@@ -122,7 +122,7 @@ if (!module.parent) {
     'Running this script directly will allow you to initialize your mysql ' +
     'database.\n This script will not modify any existing tables.\n');
 
-  prompt.get(['host', 'user', 'password'], function(err, result) {
+  prompt.get(['host', 'user', 'password'], function (err, result) {
     if (err) { return; }
     createSchema(result);
   });
@@ -148,7 +148,7 @@ function createSchema(config) {
     '`createdBy` VARCHAR(255) NULL, ' +
     '`createdById` VARCHAR(255) NULL, ' +
     'PRIMARY KEY (`id`));',
-    function(err) {
+    function (err) {
       if (err) { throw err; }
       console.log('Successfully created schema');
       connection.end();
diff --git a/5-logging/books/model-datastore.js b/5-logging/books/model-datastore.js
index 98487b2331..c768d47a2a 100644
--- a/5-logging/books/model-datastore.js
+++ b/5-logging/books/model-datastore.js
@@ -15,13 +15,11 @@
 
 var gcloud = require('gcloud');
 
+module.exports = function (config) {
 
-module.exports = function(config) {
-
-  var ds = gcloud.datastore.dataset(config.gcloud);
+  var ds = gcloud.datastore(config.gcloud);
   var kind = 'Book';
 
-
   // Translates from Datastore's entity format to
   // the format expected by the application.
   //
@@ -43,7 +41,6 @@ module.exports = function(config) {
     return obj.data;
   }
 
-
   // Translates from the application's format to the datastore's
   // extended entity property format. It also handles marking any
   // specified properties as non-indexed. Does not translate the key.
@@ -70,7 +67,7 @@ module.exports = function(config) {
   function toDatastore(obj, nonIndexed) {
     nonIndexed = nonIndexed || [];
     var results = [];
-    Object.keys(obj).forEach(function(k) {
+    Object.keys(obj).forEach(function (k) {
       if (obj[k] === undefined) { return; }
       results.push({
         name: k,
@@ -81,7 +78,6 @@ module.exports = function(config) {
     return results;
   }
 
-
   // Lists all books in the Datastore sorted alphabetically by title.
   // The ``limit`` argument determines the maximum amount of results to
   // return per page. The ``token`` argument allows requesting additional
@@ -92,14 +88,13 @@ module.exports = function(config) {
       .order('title')
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
     });
   }
 
-
   // Similar to ``list``, but only lists the books created by the specified
   // user.
   function listBy(userId, limit, token, cb) {
@@ -108,14 +103,13 @@ module.exports = function(config) {
       .limit(limit)
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
     });
   }
 
-
   // Creates a new book or updates an existing book with new data. The provided
   // data is automatically translated into Datastore format. The book will be
   // queued for background processing.
@@ -134,17 +128,16 @@ module.exports = function(config) {
 
     ds.save(
       entity,
-      function(err) {
+      function (err) {
         data.id = entity.key.id;
         cb(err, err ? null : data);
       }
     );
   }
 
-
   function read(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
-    ds.get(key, function(err, entity) {
+    ds.get(key, function (err, entity) {
       if (err) { return cb(err); }
       if (!entity) {
         return cb({
@@ -156,15 +149,13 @@ module.exports = function(config) {
     });
   }
 
-
   function _delete(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
     ds.delete(key, cb);
   }
 
-
   return {
-    create: function(data, cb) {
+    create: function (data, cb) {
       update(null, data, cb);
     },
     read: read,
@@ -173,5 +164,4 @@ module.exports = function(config) {
     list: list,
     listBy: listBy
   };
-
 };
diff --git a/5-logging/lib/images.js b/5-logging/lib/images.js
index f2d17de98e..ced0b145c9 100644
--- a/5-logging/lib/images.js
+++ b/5-logging/lib/images.js
@@ -16,7 +16,7 @@
 var gcloud = require('gcloud');
 
 
-module.exports = function(gcloudConfig, cloudStorageBucket) {
+module.exports = function (gcloudConfig, cloudStorageBucket) {
 
   var storage = gcloud.storage(gcloudConfig);
   var bucket = storage.bucket(cloudStorageBucket);
@@ -42,12 +42,12 @@ module.exports = function(gcloudConfig, cloudStorageBucket) {
     var file = bucket.file(gcsname);
     var stream = file.createWriteStream();
 
-    stream.on('error', function(err) {
+    stream.on('error', function (err) {
       req.file.cloudStorageError = err;
       next(err);
     });
 
-    stream.on('finish', function() {
+    stream.on('finish', function () {
       req.file.cloudStorageObject = gcsname;
       req.file.cloudStoragePublicUrl = getPublicUrl(gcsname);
       next();
@@ -64,7 +64,7 @@ module.exports = function(gcloudConfig, cloudStorageBucket) {
   var multer = require('multer')({
     inMemory: true,
     fileSize: 5 * 1024 * 1024, // no larger than 5mb
-    rename: function(fieldname, filename) {
+    rename: function (fieldname, filename) {
       // generate a unique filename
       return filename.replace(/\W+/g, '-').toLowerCase() + Date.now();
     }
diff --git a/5-logging/lib/logging.js b/5-logging/lib/logging.js
index 1d45af6af1..c4eba2299b 100644
--- a/5-logging/lib/logging.js
+++ b/5-logging/lib/logging.js
@@ -17,7 +17,7 @@ var winston = require('winston');
 var expressWinston = require('express-winston');
 
 
-module.exports = function() {
+module.exports = function () {
   var colorize = process.env.NODE_ENV === 'production' ? false : true;
 
   // Logger to capture all requests and output them to the console.
diff --git a/5-logging/lib/oauth2.js b/5-logging/lib/oauth2.js
index dcbce38ebe..e460e1c258 100644
--- a/5-logging/lib/oauth2.js
+++ b/5-logging/lib/oauth2.js
@@ -37,12 +37,12 @@
 //
 //     app.use(oauth2.router);
 //
-//     app.get('/users_only', oauth2.required, function(req, res){
+//     app.get('/users_only', oauth2.required, function (req, res){
 //       // only logged-in users can access.
 //       // other users are redirected to the login page.
 //     });
 //
-//     app.get('/aware', oauth2.aware, function(req, res){
+//     app.get('/aware', oauth2.aware, function (req, res){
 //       if(req.oauth2client) // user is logged in.
 //     });
 
@@ -52,7 +52,7 @@ var googleapis = require('googleapis');
 var express = require('express');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   var router = express.Router();
 
@@ -114,7 +114,7 @@ module.exports = function(config) {
   // the application and then return them to the original URL they
   // requested.
   function authRequired(req, res, next) {
-    authAware(req, res, function() {
+    authAware(req, res, function () {
       if (!req.oauth2client) {
         req.session.oauth2return = req.originalUrl;
         return res.redirect('/oauth2/authorize');
@@ -143,7 +143,7 @@ module.exports = function(config) {
   // to `/oauth2callback`. If the `return` query parameter is specified
   // when sending a user to this URL then they will be redirected to that
   // URL when the flow is finished.
-  router.get('/oauth2/authorize', function(req, res) {
+  router.get('/oauth2/authorize', function (req, res) {
     /* jshint camelcase: false */
     var stateToken = generateStateToken();
     var authorizeUrl = getClient().generateAuthUrl({
@@ -163,18 +163,18 @@ module.exports = function(config) {
   // tokens), save the credentials and user's profile information to the session
   // and then redirect the user to the `return` URL specified to
   // `/oauth2/authorize`.
-  router.get('/oauth2callback', function(req, res) {
+  router.get('/oauth2callback', function (req, res) {
     if (!req.query.code || req.query.state !== req.session.oauth2statetoken) {
       return res.status(400).send('Invalid auth code or state token.');
     }
-    getClient().getToken(req.query.code, function(err, tokens) {
+    getClient().getToken(req.query.code, function (err, tokens) {
       if (err) { return res.status(400).send(err.message); }
       req.session.oauth2tokens = tokens;
 
       /* Get the user's info and store it in the session */
       var client = getClient();
       client.setCredentials(tokens);
-      getUserProfile(client, function(err, profile) {
+      getUserProfile(client, function (err, profile) {
         if (err) { return res.status('500').send(err.message); }
         req.session.profile = {
           id: profile.id,
@@ -190,7 +190,7 @@ module.exports = function(config) {
 
   // Deletes the user's credentials and profile from the session.
   // This does not revoke any active tokens.
-  router.get('/oauth2/logout', function(req, res) {
+  router.get('/oauth2/logout', function (req, res) {
     delete req.session.oauth2tokens;
     delete req.session.profile;
     res.redirect(req.query.return || req.session.oauth2return || '/');
diff --git a/5-logging/package.json b/5-logging/package.json
index 42fa55d8fe..af6faa8805 100644
--- a/5-logging/package.json
+++ b/5-logging/package.json
@@ -34,17 +34,17 @@
     "body-parser": "^1.15.0",
     "cookie-session": "^2.0.0-alpha.1",
     "express": "^4.13.4",
-    "express-winston": "^1.2.0",
-    "gcloud": "^0.28.0",
-    "googleapis": "^2.1.7",
+    "express-winston": "^1.3.0",
+    "gcloud": "^0.30.2",
+    "googleapis": "^4.0.0",
     "jade": "^1.11.0",
-    "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "kerberos": "^0.0.19",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "multer": "^1.1.0",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0",
-    "winston": "^2.1.1"
+    "winston": "^2.2.0"
   },
   "devDependencies": {
     "jshint": "^2.9.1",
diff --git a/6-pubsub/books/model-cloudsql.js b/6-pubsub/books/model-cloudsql.js
index af068a31dc..d9209bbada 100644
--- a/6-pubsub/books/model-cloudsql.js
+++ b/6-pubsub/books/model-cloudsql.js
@@ -29,7 +29,7 @@ module.exports = function (config, background) {
     var connection = getConnection();
     connection.query(
       'SELECT * FROM `books` LIMIT ? OFFSET ?', [limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -44,7 +44,7 @@ module.exports = function (config, background) {
     connection.query(
       'SELECT * FROM `books` WHERE `createdById` = ? LIMIT ? OFFSET ?',
       [userId, limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -55,7 +55,7 @@ module.exports = function (config, background) {
   // [START create]
   function create(data, cb) {
     var connection = getConnection();
-    connection.query('INSERT INTO `books` SET ?', data, function(err, res) {
+    connection.query('INSERT INTO `books` SET ?', data, function (err, res) {
       if (err) { return cb(err); }
       background.queueBook(res.insertId);
       read(res.insertId, cb);
@@ -67,7 +67,7 @@ module.exports = function (config, background) {
   function read(id, cb) {
     var connection = getConnection();
     connection.query(
-      'SELECT * FROM `books` WHERE `id` = ?', id, function(err, results) {
+      'SELECT * FROM `books` WHERE `id` = ?', id, function (err, results) {
         if (err) { return cb(err); }
         if (!results.length) {
           return cb({
@@ -84,7 +84,7 @@ module.exports = function (config, background) {
   function update(id, data, cb) {
     var connection = getConnection();
     connection.query(
-      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function(err) {
+      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function (err) {
         if (err) { return cb(err); }
         background.queueBook(id);
         read(id, cb);
@@ -118,7 +118,7 @@ if (!module.parent) {
     'Running this script directly will allow you to initialize your mysql ' +
     'database.\n This script will not modify any existing tables.\n');
 
-  prompt.get(['host', 'user', 'password'], function(err, result) {
+  prompt.get(['host', 'user', 'password'], function (err, result) {
     if (err) { return; }
     createSchema(result);
   });
@@ -143,7 +143,7 @@ function createSchema(config) {
     '`createdBy` VARCHAR(255) NULL, ' +
     '`createdById` VARCHAR(255) NULL, ' +
     'PRIMARY KEY (`id`));',
-    function(err) {
+    function (err) {
       if (err) { throw err; }
       console.log('Successfully created schema');
       connection.end();
diff --git a/6-pubsub/books/model-datastore.js b/6-pubsub/books/model-datastore.js
index 49da6cfbd0..d9aa171774 100644
--- a/6-pubsub/books/model-datastore.js
+++ b/6-pubsub/books/model-datastore.js
@@ -17,7 +17,7 @@ var gcloud = require('gcloud');
 
 module.exports = function (config, background) {
 
-  var ds = gcloud.datastore.dataset(config.gcloud);
+  var ds = gcloud.datastore(config.gcloud);
   var kind = 'Book';
 
   // Translates from Datastore's entity format to
@@ -67,7 +67,7 @@ module.exports = function (config, background) {
   function toDatastore(obj, nonIndexed) {
     nonIndexed = nonIndexed || [];
     var results = [];
-    Object.keys(obj).forEach(function(k) {
+    Object.keys(obj).forEach(function (k) {
       if (obj[k] === undefined) { return; }
       results.push({
         name: k,
@@ -88,7 +88,7 @@ module.exports = function (config, background) {
       .order('title')
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -103,7 +103,7 @@ module.exports = function (config, background) {
       .limit(limit)
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -129,7 +129,7 @@ module.exports = function (config, background) {
 
     ds.save(
       entity,
-      function(err) {
+      function (err) {
         if(err) { return cb(err); }
         data.id = entity.key.id;
         background.queueBook(data.id);
@@ -141,7 +141,7 @@ module.exports = function (config, background) {
 
   function read(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
-    ds.get(key, function(err, entity) {
+    ds.get(key, function (err, entity) {
       if (err) { return cb(err); }
       if (!entity) {
         return cb({
@@ -159,7 +159,7 @@ module.exports = function (config, background) {
   }
 
   return {
-    create: function(data, cb) {
+    create: function (data, cb) {
       update(null, data, cb);
     },
     read: read,
diff --git a/6-pubsub/lib/background.js b/6-pubsub/lib/background.js
index fa2f3f37cc..1fbd7e3e22 100644
--- a/6-pubsub/lib/background.js
+++ b/6-pubsub/lib/background.js
@@ -20,7 +20,7 @@ var topicName = 'book-process-queue';
 var subscriptionName = 'shared-worker-subscription';
 
 
-module.exports = function(gcloudConfig, logging) {
+module.exports = function (gcloudConfig, logging) {
 
   var pubsub = gcloud.pubsub(config.gcloud);
 
@@ -32,7 +32,7 @@ module.exports = function(gcloudConfig, logging) {
   // will essentially drop any messages.
   // [START topic]
   function getTopic(cb) {
-    pubsub.createTopic(topicName, function(err, topic) {
+    pubsub.createTopic(topicName, function (err, topic) {
       // topic already exists.
       if (err && err.code === 409) {
         return cb(null, pubsub.topic(topicName));
@@ -49,16 +49,16 @@ module.exports = function(gcloudConfig, logging) {
   // to each worker.
   // [START subscribe]
   function subscribe(cb) {
-    getTopic(function(err, topic) {
+    getTopic(function (err, topic) {
       if (err) { return cb(err); }
 
       topic.subscribe(subscriptionName, {
         autoAck: true,
         reuseExisting: true
-      }, function(err, subscription) {
+      }, function (err, subscription) {
         if (err) { return cb(err); }
 
-        subscription.on('message', function(message) {
+        subscription.on('message', function (message) {
           cb(null, message.data);
         });
 
@@ -74,7 +74,7 @@ module.exports = function(gcloudConfig, logging) {
   // Adds a book to the queue to be processed by the worker.
   // [START queue]
   function queueBook(bookId) {
-    getTopic(function(err, topic) {
+    getTopic(function (err, topic) {
       if (err) {
         logging.error('Error occurred while getting pubsub topic', err);
         return;
@@ -85,7 +85,7 @@ module.exports = function(gcloudConfig, logging) {
           action: 'processBook',
           bookId: bookId
         }
-      }, function(err) {
+      }, function (err) {
         if (err) {
           logging.error('Error occurred while queuing background task', err);
         } else {
diff --git a/6-pubsub/lib/images.js b/6-pubsub/lib/images.js
index e1bbde18b5..27ac8609b4 100644
--- a/6-pubsub/lib/images.js
+++ b/6-pubsub/lib/images.js
@@ -31,18 +31,18 @@ module.exports = function (gcloudConfig, cloudStorageBucket, logging) {
 
     request
       .get(sourceUrl)
-      .on('error', function(err) {
+      .on('error', function (err) {
         logging.warn('Could not fetch image ' + sourceUrl, err);
         cb(err);
       })
       .pipe(file.createWriteStream())
-      .on('finish', function() {
+      .on('finish', function () {
         logging.info('Uploaded image ' + destFileName);
-        file.makePublic(function(){
+        file.makePublic(function (){
           cb(null, getPublicUrl(destFileName));
         });
       })
-      .on('error', function(err) {
+      .on('error', function (err) {
         logging.error('Could not upload image', err);
         cb(err);
       });
@@ -70,12 +70,12 @@ module.exports = function (gcloudConfig, cloudStorageBucket, logging) {
     var file = bucket.file(gcsname);
     var stream = file.createWriteStream();
 
-    stream.on('error', function(err) {
+    stream.on('error', function (err) {
       req.file.cloudStorageError = err;
       next(err);
     });
 
-    stream.on('finish', function() {
+    stream.on('finish', function () {
       req.file.cloudStorageObject = gcsname;
       req.file.cloudStoragePublicUrl = getPublicUrl(gcsname);
       next();
@@ -92,7 +92,7 @@ module.exports = function (gcloudConfig, cloudStorageBucket, logging) {
   var multer = require('multer')({
     inMemory: true,
     fileSize: 5 * 1024 * 1024, // no larger than 5mb
-    rename: function(fieldname, filename) {
+    rename: function (fieldname, filename) {
       // generate a unique filename
       return filename.replace(/\W+/g, '-').toLowerCase() + Date.now();
     }
diff --git a/6-pubsub/lib/logging.js b/6-pubsub/lib/logging.js
index 133411900b..3957338dd0 100644
--- a/6-pubsub/lib/logging.js
+++ b/6-pubsub/lib/logging.js
@@ -17,7 +17,7 @@ var winston = require('winston');
 var expressWinston = require('express-winston');
 
 
-module.exports = function() {
+module.exports = function () {
   var colorize = process.env.NODE_ENV === 'production' ? false : true;
 
   // Logger to capture all requests and output them to the console.
diff --git a/6-pubsub/lib/oauth2.js b/6-pubsub/lib/oauth2.js
index dcbce38ebe..e460e1c258 100644
--- a/6-pubsub/lib/oauth2.js
+++ b/6-pubsub/lib/oauth2.js
@@ -37,12 +37,12 @@
 //
 //     app.use(oauth2.router);
 //
-//     app.get('/users_only', oauth2.required, function(req, res){
+//     app.get('/users_only', oauth2.required, function (req, res){
 //       // only logged-in users can access.
 //       // other users are redirected to the login page.
 //     });
 //
-//     app.get('/aware', oauth2.aware, function(req, res){
+//     app.get('/aware', oauth2.aware, function (req, res){
 //       if(req.oauth2client) // user is logged in.
 //     });
 
@@ -52,7 +52,7 @@ var googleapis = require('googleapis');
 var express = require('express');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   var router = express.Router();
 
@@ -114,7 +114,7 @@ module.exports = function(config) {
   // the application and then return them to the original URL they
   // requested.
   function authRequired(req, res, next) {
-    authAware(req, res, function() {
+    authAware(req, res, function () {
       if (!req.oauth2client) {
         req.session.oauth2return = req.originalUrl;
         return res.redirect('/oauth2/authorize');
@@ -143,7 +143,7 @@ module.exports = function(config) {
   // to `/oauth2callback`. If the `return` query parameter is specified
   // when sending a user to this URL then they will be redirected to that
   // URL when the flow is finished.
-  router.get('/oauth2/authorize', function(req, res) {
+  router.get('/oauth2/authorize', function (req, res) {
     /* jshint camelcase: false */
     var stateToken = generateStateToken();
     var authorizeUrl = getClient().generateAuthUrl({
@@ -163,18 +163,18 @@ module.exports = function(config) {
   // tokens), save the credentials and user's profile information to the session
   // and then redirect the user to the `return` URL specified to
   // `/oauth2/authorize`.
-  router.get('/oauth2callback', function(req, res) {
+  router.get('/oauth2callback', function (req, res) {
     if (!req.query.code || req.query.state !== req.session.oauth2statetoken) {
       return res.status(400).send('Invalid auth code or state token.');
     }
-    getClient().getToken(req.query.code, function(err, tokens) {
+    getClient().getToken(req.query.code, function (err, tokens) {
       if (err) { return res.status(400).send(err.message); }
       req.session.oauth2tokens = tokens;
 
       /* Get the user's info and store it in the session */
       var client = getClient();
       client.setCredentials(tokens);
-      getUserProfile(client, function(err, profile) {
+      getUserProfile(client, function (err, profile) {
         if (err) { return res.status('500').send(err.message); }
         req.session.profile = {
           id: profile.id,
@@ -190,7 +190,7 @@ module.exports = function(config) {
 
   // Deletes the user's credentials and profile from the session.
   // This does not revoke any active tokens.
-  router.get('/oauth2/logout', function(req, res) {
+  router.get('/oauth2/logout', function (req, res) {
     delete req.session.oauth2tokens;
     delete req.session.profile;
     res.redirect(req.query.return || req.session.oauth2return || '/');
diff --git a/6-pubsub/package.json b/6-pubsub/package.json
index fc88a3d9d4..ec3914fda2 100644
--- a/6-pubsub/package.json
+++ b/6-pubsub/package.json
@@ -34,18 +34,18 @@
     "body-parser": "^1.15.0",
     "cookie-session": "^2.0.0-alpha.1",
     "express": "^4.13.4",
-    "express-winston": "^1.2.0",
-    "gcloud": "^0.28.0",
-    "googleapis": "^2.1.7",
+    "express-winston": "^1.3.0",
+    "gcloud": "^0.30.2",
+    "googleapis": "^4.0.0",
     "jade": "^1.11.0",
-    "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "kerberos": "^0.0.19",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "multer": "^1.1.0",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0",
-    "request": "^2.69.0",
-    "winston": "^2.1.1"
+    "request": "^2.70.0",
+    "winston": "^2.2.0"
   },
   "devDependencies": {
     "jshint": "^2.9.1",
diff --git a/6-pubsub/worker.js b/6-pubsub/worker.js
index 6b33e0432a..5ae71df58a 100644
--- a/6-pubsub/worker.js
+++ b/6-pubsub/worker.js
@@ -23,17 +23,15 @@ var images = require('./lib/images')(
   config.gcloud, config.cloudStorageBucket, logging);
 var background = require('./lib/background')(config.gcloud, logging);
 
-
 // We'll pass this to the model so that we don't get an infinite loop of book
 // processing requests.
 var backgroundStub = {
-  queueBook: function(){}
+  queueBook: function (){}
 };
 
 var model = require('./books/model-' + config.dataBackend)(
   config, backgroundStub);
 
-
 // When running on Google App Engine Managed VMs, the worker needs
 // to respond to HTTP requests and can optionally supply a health check.
 // [START server]
@@ -41,8 +39,7 @@ var app = express();
 
 app.use(logging.requestLogger);
 
-
-app.get('/_ah/health', function(req, res) {
+app.get('/_ah/health', function (req, res) {
   res.status(200).send('ok');
 });
 
@@ -50,39 +47,39 @@ app.get('/_ah/health', function(req, res) {
 // Keep count of how many books this worker has processed
 var bookCount = 0;
 
-app.get('/', function(req, res) {
+app.get('/', function (req, res) {
   res.send('This worker has processed ' + bookCount + ' books.');
 });
 
-
 app.use(logging.errorLogger);
 
+if (module === require.main) {
+  var server = app.listen(config.port || 8080, function () {
+    var host = server.address().address;
+    var port = server.address().port;
 
-var server = app.listen(config.port || 8080, function () {
-  var host = server.address().address;
-  var port = server.address().port;
-
-  console.log('App listening at http://%s:%s', host, port);
-});
+    console.log('App listening at http://%s:%s', host, port);
+  });
+}
 // [END server]
 
-
-// Subscribe to Cloud Pub/Sub and receive messages to process books.
-// The subscription will continue to listen for messages until the process
-// is killed.
-// [START subscribe]
-background.subscribe(function(err, message) {
-  // Any errors received are considered fatal.
-  if(err) { throw err; }
-  if (message.action === 'processBook') {
-    logging.info('Received request to process book ' + message.bookId);
-    processBook(message.bookId);
-  } else {
-    logging.warn('Unknown request', message);
-  }
-});
-// [END subscribe]
-
+if (module === require.main) {
+  // Subscribe to Cloud Pub/Sub and receive messages to process books.
+  // The subscription will continue to listen for messages until the process
+  // is killed.
+  // [START subscribe]
+  background.subscribe(function (err, message) {
+    // Any errors received are considered fatal.
+    if(err) { throw err; }
+    if (message.action === 'processBook') {
+      logging.info('Received request to process book ' + message.bookId);
+      processBook(message.bookId);
+    } else {
+      logging.warn('Unknown request', message);
+    }
+  });
+  // [END subscribe]
+}
 
 // Processes a book by reading its existing data, attempting to find
 // more information, and updating the database with the new information.
@@ -90,16 +87,16 @@ background.subscribe(function(err, message) {
 function processBook(bookId) {
   waterfall([
     // Load the current data
-    function(cb) {
+    function (cb) {
       model.read(bookId, cb);
     },
     // Find the information from Google
     findBookInfo,
     // Save the updated data
-    function(updated, cb) {
+    function (updated, cb) {
       model.update(updated.id, updated, cb, true);
     }
-  ], function(err) {
+  ], function (err) {
     if (err) {
       logging.error('Error occurred', err);
     } else {
@@ -116,7 +113,7 @@ function processBook(bookId) {
 // if available.
 // [START find]
 function findBookInfo(book, cb) {
-  queryBooksApi(book.title, function(err, r) {
+  queryBooksApi(book.title, function (err, r) {
     if (err) { return cb(err); }
     if (!r.items) { return cb('Not found'); }
     var top = r.items[0];
@@ -137,7 +134,7 @@ function findBookInfo(book, cb) {
     var imageName = book.id + '.jpg';
 
     images.downloadAndUploadImage(
-      imageUrl, imageName, function(err, publicUrl) {
+      imageUrl, imageName, function (err, publicUrl) {
         if (!err) { book.imageUrl = publicUrl; }
         cb(null, book);
       });
@@ -153,7 +150,7 @@ function queryBooksApi(query, cb) {
   request(
     'https://www.googleapis.com/books/v1/volumes?q=' +
       encodeURIComponent(query),
-    function(err, resp, body) {
+    function (err, resp, body) {
       if (err || resp.statusCode !== 200) {
         return cb(err || 'Response returned ' + resp.statusCode);
       }
@@ -163,5 +160,7 @@ function queryBooksApi(query, cb) {
 }
 // [END query]
 
-
-
+exports.app = app;
+exports.processBook = processBook;
+exports.findBookInfo = findBookInfo;
+exports.queryBooksApi = queryBooksApi;
diff --git a/7-gce/books/model-cloudsql.js b/7-gce/books/model-cloudsql.js
index 63f3526a73..8d2f7cd988 100644
--- a/7-gce/books/model-cloudsql.js
+++ b/7-gce/books/model-cloudsql.js
@@ -29,7 +29,7 @@ module.exports = function (config, background) {
     var connection = getConnection();
     connection.query(
       'SELECT * FROM `books` LIMIT ? OFFSET ?', [limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -44,7 +44,7 @@ module.exports = function (config, background) {
     connection.query(
       'SELECT * FROM `books` WHERE `createdById` = ? LIMIT ? OFFSET ?',
       [userId, limit, token],
-      function(err, results) {
+      function (err, results) {
         if (err) { return cb(err); }
         var hasMore = results.length === limit ? token + results.length : false;
         cb(null, results, hasMore);
@@ -54,7 +54,7 @@ module.exports = function (config, background) {
 
   function create(data, cb) {
     var connection = getConnection();
-    connection.query('INSERT INTO `books` SET ?', data, function(err, res) {
+    connection.query('INSERT INTO `books` SET ?', data, function (err, res) {
       if (err) { return cb(err); }
       background.queueBook(res.insertId);
       read(res.insertId, cb);
@@ -65,7 +65,7 @@ module.exports = function (config, background) {
   function read(id, cb) {
     var connection = getConnection();
     connection.query(
-      'SELECT * FROM `books` WHERE `id` = ?', id, function(err, results) {
+      'SELECT * FROM `books` WHERE `id` = ?', id, function (err, results) {
         if (err) { return cb(err); }
         if (!results.length) {
           return cb({
@@ -81,7 +81,7 @@ module.exports = function (config, background) {
   function update(id, data, cb) {
     var connection = getConnection();
     connection.query(
-      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function(err) {
+      'UPDATE `books` SET ? WHERE `id` = ?', [data, id], function (err) {
         if (err) { return cb(err); }
         background.queueBook(id);
         read(id, cb);
@@ -114,7 +114,7 @@ if (!module.parent) {
     'Running this script directly will allow you to initialize your mysql ' +
     'database.\n This script will not modify any existing tables.\n');
 
-  prompt.get(['host', 'user', 'password'], function(err, result) {
+  prompt.get(['host', 'user', 'password'], function (err, result) {
     if (err) { return; }
     createSchema(result);
   });
@@ -139,7 +139,7 @@ function createSchema(config) {
     '`createdBy` VARCHAR(255) NULL, ' +
     '`createdById` VARCHAR(255) NULL, ' +
     'PRIMARY KEY (`id`));',
-    function(err) {
+    function (err) {
       if (err) { throw err; }
       console.log('Successfully created schema');
       connection.end();
diff --git a/7-gce/books/model-datastore.js b/7-gce/books/model-datastore.js
index affc980b35..933f736efe 100644
--- a/7-gce/books/model-datastore.js
+++ b/7-gce/books/model-datastore.js
@@ -17,7 +17,7 @@ var gcloud = require('gcloud');
 
 module.exports = function (config, background) {
 
-  var ds = gcloud.datastore.dataset(config.gcloud);
+  var ds = gcloud.datastore(config.gcloud);
   var kind = 'Book';
 
   // Translates from Datastore's entity format to
@@ -67,7 +67,7 @@ module.exports = function (config, background) {
   function toDatastore(obj, nonIndexed) {
     nonIndexed = nonIndexed || [];
     var results = [];
-    Object.keys(obj).forEach(function(k) {
+    Object.keys(obj).forEach(function (k) {
       if (obj[k] === undefined) { return; }
       results.push({
         name: k,
@@ -88,7 +88,7 @@ module.exports = function (config, background) {
       .order('title')
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -103,7 +103,7 @@ module.exports = function (config, background) {
       .limit(limit)
       .start(token);
 
-    ds.runQuery(q, function(err, entities, nextQuery) {
+    ds.runQuery(q, function (err, entities, nextQuery) {
       if (err) { return cb(err); }
       var hasMore = entities.length === limit ? nextQuery.startVal : false;
       cb(null, entities.map(fromDatastore), hasMore);
@@ -128,7 +128,7 @@ module.exports = function (config, background) {
 
     ds.save(
       entity,
-      function(err) {
+      function (err) {
         if(err) { return cb(err); }
         data.id = entity.key.id;
         background.queueBook(data.id);
@@ -139,7 +139,7 @@ module.exports = function (config, background) {
 
   function read(id, cb) {
     var key = ds.key([kind, parseInt(id, 10)]);
-    ds.get(key, function(err, entity) {
+    ds.get(key, function (err, entity) {
       if (err) { return cb(err); }
       if (!entity) {
         return cb({
@@ -157,7 +157,7 @@ module.exports = function (config, background) {
   }
 
   return {
-    create: function(data, cb) {
+    create: function (data, cb) {
       update(null, data, cb);
     },
     read: read,
diff --git a/7-gce/lib/background.js b/7-gce/lib/background.js
index b20b7f4707..21f62f794f 100644
--- a/7-gce/lib/background.js
+++ b/7-gce/lib/background.js
@@ -20,7 +20,7 @@ var topicName = 'book-process-queue';
 var subscriptionName = 'shared-worker-subscription';
 
 
-module.exports = function(gcloudConfig, logging) {
+module.exports = function (gcloudConfig, logging) {
 
   var pubsub = gcloud.pubsub(config.gcloud);
 
@@ -31,7 +31,7 @@ module.exports = function(gcloudConfig, logging) {
   // publishing anything to it as topics without subscribers
   // will essentially drop any messages.
   function getTopic(cb) {
-    pubsub.createTopic(topicName, function(err, topic) {
+    pubsub.createTopic(topicName, function (err, topic) {
       // topic already exists.
       if (err && err.code === 409) {
         return cb(null, pubsub.topic(topicName));
@@ -46,16 +46,16 @@ module.exports = function(gcloudConfig, logging) {
   // subscription, which means that pub/sub will evenly distribute messages
   // to each worker.
   function subscribe(cb) {
-    getTopic(function(err, topic) {
+    getTopic(function (err, topic) {
       if (err) { return cb(err); }
 
       topic.subscribe(subscriptionName, {
         autoAck: true,
         reuseExisting: true
-      }, function(err, subscription) {
+      }, function (err, subscription) {
         if (err) { return cb(err); }
 
-        subscription.on('message', function(message) {
+        subscription.on('message', function (message) {
           cb(null, message.data);
         });
 
@@ -69,7 +69,7 @@ module.exports = function(gcloudConfig, logging) {
 
   // Adds a book to the queue to be processed by the worker.
   function queueBook(bookId) {
-    getTopic(function(err, topic) {
+    getTopic(function (err, topic) {
       if (err) {
         logging.error('Error occurred while getting pubsub topic', err);
         return;
@@ -80,7 +80,7 @@ module.exports = function(gcloudConfig, logging) {
           action: 'processBook',
           bookId: bookId
         }
-      }, function(err) {
+      }, function (err) {
         if (err) {
           logging.error('Error occurred while queuing background task', err);
         } else {
diff --git a/7-gce/lib/images.js b/7-gce/lib/images.js
index e6cc36e0fe..8bf9f56bb4 100644
--- a/7-gce/lib/images.js
+++ b/7-gce/lib/images.js
@@ -30,18 +30,18 @@ module.exports = function (gcloudConfig, cloudStorageBucket, logging) {
 
     request
       .get(sourceUrl)
-      .on('error', function(err) {
+      .on('error', function (err) {
         logging.warn('Could not fetch image ' + sourceUrl, err);
         cb(err);
       })
       .pipe(file.createWriteStream())
-      .on('finish', function() {
+      .on('finish', function () {
         logging.info('Uploaded image ' + destFileName);
-        file.makePublic(function(){
+        file.makePublic(function (){
           cb(null, getPublicUrl(destFileName));
         });
       })
-      .on('error', function(err) {
+      .on('error', function (err) {
         logging.error('Could not upload image', err);
         cb(err);
       });
@@ -68,12 +68,12 @@ module.exports = function (gcloudConfig, cloudStorageBucket, logging) {
     var file = bucket.file(gcsname);
     var stream = file.createWriteStream();
 
-    stream.on('error', function(err) {
+    stream.on('error', function (err) {
       req.file.cloudStorageError = err;
       next(err);
     });
 
-    stream.on('finish', function() {
+    stream.on('finish', function () {
       req.file.cloudStorageObject = gcsname;
       req.file.cloudStoragePublicUrl = getPublicUrl(gcsname);
       next();
@@ -90,7 +90,7 @@ module.exports = function (gcloudConfig, cloudStorageBucket, logging) {
   var multer = require('multer')({
     inMemory: true,
     fileSize: 5 * 1024 * 1024, // no larger than 5mb
-    rename: function(fieldname, filename) {
+    rename: function (fieldname, filename) {
       // generate a unique filename
       return filename.replace(/\W+/g, '-').toLowerCase() + Date.now();
     }
diff --git a/7-gce/lib/logging.js b/7-gce/lib/logging.js
index 133411900b..3957338dd0 100644
--- a/7-gce/lib/logging.js
+++ b/7-gce/lib/logging.js
@@ -17,7 +17,7 @@ var winston = require('winston');
 var expressWinston = require('express-winston');
 
 
-module.exports = function() {
+module.exports = function () {
   var colorize = process.env.NODE_ENV === 'production' ? false : true;
 
   // Logger to capture all requests and output them to the console.
diff --git a/7-gce/lib/oauth2.js b/7-gce/lib/oauth2.js
index dcbce38ebe..e460e1c258 100644
--- a/7-gce/lib/oauth2.js
+++ b/7-gce/lib/oauth2.js
@@ -37,12 +37,12 @@
 //
 //     app.use(oauth2.router);
 //
-//     app.get('/users_only', oauth2.required, function(req, res){
+//     app.get('/users_only', oauth2.required, function (req, res){
 //       // only logged-in users can access.
 //       // other users are redirected to the login page.
 //     });
 //
-//     app.get('/aware', oauth2.aware, function(req, res){
+//     app.get('/aware', oauth2.aware, function (req, res){
 //       if(req.oauth2client) // user is logged in.
 //     });
 
@@ -52,7 +52,7 @@ var googleapis = require('googleapis');
 var express = require('express');
 
 
-module.exports = function(config) {
+module.exports = function (config) {
 
   var router = express.Router();
 
@@ -114,7 +114,7 @@ module.exports = function(config) {
   // the application and then return them to the original URL they
   // requested.
   function authRequired(req, res, next) {
-    authAware(req, res, function() {
+    authAware(req, res, function () {
       if (!req.oauth2client) {
         req.session.oauth2return = req.originalUrl;
         return res.redirect('/oauth2/authorize');
@@ -143,7 +143,7 @@ module.exports = function(config) {
   // to `/oauth2callback`. If the `return` query parameter is specified
   // when sending a user to this URL then they will be redirected to that
   // URL when the flow is finished.
-  router.get('/oauth2/authorize', function(req, res) {
+  router.get('/oauth2/authorize', function (req, res) {
     /* jshint camelcase: false */
     var stateToken = generateStateToken();
     var authorizeUrl = getClient().generateAuthUrl({
@@ -163,18 +163,18 @@ module.exports = function(config) {
   // tokens), save the credentials and user's profile information to the session
   // and then redirect the user to the `return` URL specified to
   // `/oauth2/authorize`.
-  router.get('/oauth2callback', function(req, res) {
+  router.get('/oauth2callback', function (req, res) {
     if (!req.query.code || req.query.state !== req.session.oauth2statetoken) {
       return res.status(400).send('Invalid auth code or state token.');
     }
-    getClient().getToken(req.query.code, function(err, tokens) {
+    getClient().getToken(req.query.code, function (err, tokens) {
       if (err) { return res.status(400).send(err.message); }
       req.session.oauth2tokens = tokens;
 
       /* Get the user's info and store it in the session */
       var client = getClient();
       client.setCredentials(tokens);
-      getUserProfile(client, function(err, profile) {
+      getUserProfile(client, function (err, profile) {
         if (err) { return res.status('500').send(err.message); }
         req.session.profile = {
           id: profile.id,
@@ -190,7 +190,7 @@ module.exports = function(config) {
 
   // Deletes the user's credentials and profile from the session.
   // This does not revoke any active tokens.
-  router.get('/oauth2/logout', function(req, res) {
+  router.get('/oauth2/logout', function (req, res) {
     delete req.session.oauth2tokens;
     delete req.session.profile;
     res.redirect(req.query.return || req.session.oauth2return || '/');
diff --git a/7-gce/package.json b/7-gce/package.json
index fc88a3d9d4..ec3914fda2 100644
--- a/7-gce/package.json
+++ b/7-gce/package.json
@@ -34,18 +34,18 @@
     "body-parser": "^1.15.0",
     "cookie-session": "^2.0.0-alpha.1",
     "express": "^4.13.4",
-    "express-winston": "^1.2.0",
-    "gcloud": "^0.28.0",
-    "googleapis": "^2.1.7",
+    "express-winston": "^1.3.0",
+    "gcloud": "^0.30.2",
+    "googleapis": "^4.0.0",
     "jade": "^1.11.0",
-    "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "kerberos": "^0.0.19",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "multer": "^1.1.0",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0",
-    "request": "^2.69.0",
-    "winston": "^2.1.1"
+    "request": "^2.70.0",
+    "winston": "^2.2.0"
   },
   "devDependencies": {
     "jshint": "^2.9.1",
diff --git a/7-gce/worker.js b/7-gce/worker.js
index 19cc848e4a..532786bf32 100644
--- a/7-gce/worker.js
+++ b/7-gce/worker.js
@@ -27,7 +27,7 @@ var background = require('./lib/background')(config.gcloud, logging);
 // We'll pass this to the model so that we don't get an infinite loop of book
 // processing requests.
 var backgroundStub = {
-  queueBook: function(){}
+  queueBook: function (){}
 };
 
 var model = require('./books/model-' + config.dataBackend)(
@@ -41,7 +41,7 @@ var app = express();
 app.use(logging.requestLogger);
 
 
-app.get('/_ah/health', function(req, res) {
+app.get('/_ah/health', function (req, res) {
   res.status(200).send('ok');
 });
 
@@ -49,7 +49,7 @@ app.get('/_ah/health', function(req, res) {
 // Keep count of how many books this worker has processed
 var bookCount = 0;
 
-app.get('/', function(req, res) {
+app.get('/', function (req, res) {
   res.send('This worker has processed ' + bookCount + ' books.');
 });
 
@@ -68,7 +68,7 @@ var server = app.listen(config.port || 8080, function () {
 // Subscribe to Cloud Pub/Sub and receive messages to process books.
 // The subscription will continue to listen for messages until the process
 // is killed.
-background.subscribe(function(err, message) {
+background.subscribe(function (err, message) {
   // Any errors received are considered fatal.
   if(err) { throw err; }
   if (message.action === 'processBook') {
@@ -85,16 +85,16 @@ background.subscribe(function(err, message) {
 function processBook(bookId) {
   waterfall([
     // Load the current data
-    function(cb) {
+    function (cb) {
       model.read(bookId, cb);
     },
     // Find the information from Google
     findBookInfo,
     // Save the updated data
-    function(updated, cb) {
+    function (updated, cb) {
       model.update(updated.id, updated, cb, true);
     }
-  ], function(err) {
+  ], function (err) {
     if (err) {
       logging.error('Error occurred', err);
     } else {
@@ -109,7 +109,7 @@ function processBook(bookId) {
 // the book's data. Also uploads a cover image to Cloud Storage
 // if available.
 function findBookInfo(book, cb) {
-  queryBooksApi(book.title, function(err, r) {
+  queryBooksApi(book.title, function (err, r) {
     if (err) { return cb(err); }
     if (!r.items) { return cb('Not found'); }
     var top = r.items[0];
@@ -130,7 +130,7 @@ function findBookInfo(book, cb) {
     var imageName = book.id + '.jpg';
 
     images.downloadAndUploadImage(
-      imageUrl, imageName, function(err, publicUrl) {
+      imageUrl, imageName, function (err, publicUrl) {
         if (!err) { book.imageUrl = publicUrl; }
         cb(null, book);
       });
@@ -144,7 +144,7 @@ function queryBooksApi(query, cb) {
   request(
     'https://www.googleapis.com/books/v1/volumes?q=' +
       encodeURIComponent(query),
-    function(err, resp, body) {
+    function (err, resp, body) {
       if (err || resp.statusCode !== 200) {
         return cb(err || 'Response returned ' + resp.statusCode);
       }
diff --git a/package.json b/package.json
index 60f4f79c0a..65baa34d79 100644
--- a/package.json
+++ b/package.json
@@ -32,21 +32,21 @@
     "body-parser": "^1.15.0",
     "cookie-session": "^2.0.0-alpha.1",
     "express": "^4.13.4",
-    "express-winston": "^1.2.0",
+    "express-winston": "^1.3.0",
     "gcloud": "^0.28.0",
     "googleapis": "^2.1.7",
     "jade": "^1.11.0",
     "kerberos": "^0.0.18",
-    "lodash": "^4.5.1",
-    "mongodb": "^2.1.7",
+    "lodash": "^4.8.2",
+    "mongodb": "^2.1.15",
     "multer": "^1.1.0",
     "mysql": "^2.10.2",
     "prompt": "^1.0.0",
-    "request": "^2.69.0",
-    "winston": "^2.1.1"
+    "request": "^2.70.0",
+    "winston": "^2.2.0"
   },
   "devDependencies": {
-    "coveralls": "^2.11.6",
+    "coveralls": "^2.11.9",
     "istanbul": "^0.4.2",
     "jshint": "^2.9.1",
     "mocha": "^2.4.5",