diff --git a/lib/travis/api/app/helpers/accept.rb b/lib/travis/api/app/helpers/accept.rb
index 56d7fd86..7e83e86f 100644
--- a/lib/travis/api/app/helpers/accept.rb
+++ b/lib/travis/api/app/helpers/accept.rb
@@ -4,7 +4,7 @@ class Travis::Api::App
   module Helpers
     module Accept
       HEADER_FORMAT   = /vnd\.travis-ci\.(\d+)\+(\w+)/
-      DEFAULT_VERSION = 'v1'
+      DEFAULT_VERSION = 'v2'
       DEFAULT_FORMAT  = 'json'
 
       class Entry
@@ -12,6 +12,7 @@ class Travis::Api::App
         TOKEN      = /[^#{SEPARATORS}]+/
         attr_reader :type, :subtype, :quality, :version, :params
         def initialize(accept_string)
+          puts "DEBUG: Accept String: #{accept_string.inspect}"
           @type, @subtype, @quality, @version, @params = parse(accept_string)
         end
 
diff --git a/lib/travis/api/app/responders/json.rb b/lib/travis/api/app/responders/json.rb
index 127b691a..d205c4b1 100644
--- a/lib/travis/api/app/responders/json.rb
+++ b/lib/travis/api/app/responders/json.rb
@@ -57,6 +57,8 @@ class Travis::Api::App
         end
 
         def version
+          puts "DEBUG: options: #{options.inspect}"
+          puts "DEBUG: options-accept-version: #{options[:accept].version}"
           options[:accept].version || Travis::Api::App::Helpers::Accept::DEFAULT_VERSION
         end
 
diff --git a/lib/travis/api/serialize/v1/http/build.rb b/lib/travis/api/serialize/v1/http/build.rb
index 295199a9..90cef2f0 100644
--- a/lib/travis/api/serialize/v1/http/build.rb
+++ b/lib/travis/api/serialize/v1/http/build.rb
@@ -17,6 +17,7 @@ module Travis
             end
 
             def data
+              puts 'DEBUG: travis/api/serialize/v1/http/build.rb:20'
               {
                 'id' => build.id,
                 'repository_id' => build.repository_id,
diff --git a/lib/travis/api/serialize/v2/http/build.rb b/lib/travis/api/serialize/v2/http/build.rb
index 27ff3416..88336a68 100644
--- a/lib/travis/api/serialize/v2/http/build.rb
+++ b/lib/travis/api/serialize/v2/http/build.rb
@@ -18,6 +18,7 @@ module Travis
             end
 
             def data
+              puts "DEBUG: I'm in v2 line 21 travis/api/serialize/v2/http/build.rb:21"
               {
                 'build'  => build_data(build),
                 'commit' => commit_data(build.commit, build.repository),