diff --git a/Gemfile.lock b/Gemfile.lock
index 042583b3..f617921d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -23,7 +23,7 @@ GIT
 
 GIT
   remote: git://github.com/travis-ci/travis-core.git
-  revision: 3a45afb991fecb3dea594c01502d27a1551b5417
+  revision: a02b830498e64dff77b3ed99d7b9f53b546014df
   specs:
     travis-core (0.0.1)
       actionmailer (~> 3.2.12)
diff --git a/spec/unit/endpoint/users_spec.rb b/spec/unit/endpoint/users_spec.rb
index 8edee8bf..7675b170 100644
--- a/spec/unit/endpoint/users_spec.rb
+++ b/spec/unit/endpoint/users_spec.rb
@@ -24,6 +24,7 @@ describe Travis::Api::App::Endpoint::Users do
       'gravatar_id'    => user.gravatar_id,
       'locale'         => user.locale,
       'is_syncing'     => user.is_syncing,
+      'created_at'     => user.created_at.strftime('%Y-%m-%dT%H:%M:%SZ'),
       'synced_at'      => user.synced_at.strftime('%Y-%m-%dT%H:%M:%SZ'),
       'correct_scopes' => true,
     }