diff --git a/HISTORY.md b/HISTORY.md
index ec1cbfbeaf..141b88f1ae 100644
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -2,6 +2,7 @@
 -----------------
 - NODE-463 db.close immediately executes its callback.
 - Don't only emit server close event once (Issue #1276, https://github.com/vkarpov15).
+- NODE-464 Updated mongodb-core to 1.1.29 that uses a single socket connection to arbiters and hidden servers.
 
 2.0.31 05-08-2015
 -----------------
diff --git a/package.json b/package.json
index f25f55a73b..9975894b90 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "legacy"
   ],
   "dependencies": {
-      "mongodb-core": "1.1.26"
+      "mongodb-core": "1.1.29"
     , "readable-stream": "1.0.31"
   },
   "devDependencies": {
diff --git a/test/functional/cursor_tests.js b/test/functional/cursor_tests.js
index de0bb53fa2..5f64c218c1 100644
--- a/test/functional/cursor_tests.js
+++ b/test/functional/cursor_tests.js
@@ -2575,7 +2575,6 @@ exports['Should correctly handle batchSize of 2'] = {
             db.close();
 
             cursor.nextObject(function(err, obj) {
-              console.dir(err)
               test.equal(null, err);
 
               cursor.nextObject(function(err, obj) {
diff --git a/test/functional/db_tests.js b/test/functional/db_tests.js
index 4f1a67c489..8a31108d3e 100644
--- a/test/functional/db_tests.js
+++ b/test/functional/db_tests.js
@@ -137,9 +137,10 @@ exports.shouldCorrectlyHandleFailedConnection = {
   test: function(configuration, test) {
     var Db = configuration.require.Db
       , Server = configuration.require.Server;
-
+      console.log("-------------------------------------------- 0")
     var fs_client = new Db(configuration.database, new Server("127.0.0.1", 25117, {auto_reconnect: false}), configuration.writeConcernMax());
     fs_client.open(function(err, fs_client) {
+      console.log("-------------------------------------------- 1")
       test.ok(err != null)
       test.done();
     })