diff --git a/Gemfile b/Gemfile
index aa56ca9..cf9030f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -6,3 +6,4 @@ gemspec
 # gem "mongoid", github: "mongoid/mongoid"
 # gem "mongoid", "~> 3.1.0"
 # gem "activerecord", "~> 3.2.0"
+# gem "activerecord", "~> 3.1.0"
diff --git a/lib/searchkick/model.rb b/lib/searchkick/model.rb
index b338c48..4195900 100644
--- a/lib/searchkick/model.rb
+++ b/lib/searchkick/model.rb
@@ -19,7 +19,7 @@ module Searchkick
         end
 
         def search_data
-          as_json
+          to_hash.reject{|k, v| k == "id" }
         end
 
         def to_indexed_json
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 2289f87..3a71030 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -81,7 +81,7 @@ class Product
   attr_accessor :conversions, :user_ids
 
   def search_data
-    as_json(root: false).merge conversions: conversions, user_ids: user_ids
+    to_hash.merge conversions: conversions, user_ids: user_ids
   end
 end
 
--
libgit2 0.21.0