diff --git a/.travis.yml b/.travis.yml
index 25862ac..0ea612a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,5 @@
 language: ruby
-rvm:
-  - 2.2
+rvm: 2.2
 services:
   - elasticsearch
   - mongodb
diff --git a/gemfiles/nobrainer.gemfile b/gemfiles/nobrainer.gemfile
index 7d01273..d59f02b 100644
--- a/gemfiles/nobrainer.gemfile
+++ b/gemfiles/nobrainer.gemfile
@@ -3,4 +3,4 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in searchkick.gemspec
 gemspec path: "../"
 
-gem "nobrainer", "0.22.0"
+gem "nobrainer", "0.27.0"
diff --git a/test/test_helper.rb b/test/test_helper.rb
index f451aa5..76abcd4 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -85,8 +85,8 @@ elsif defined?(NoBrainer)
     include NoBrainer::Document
     include NoBrainer::Document::Timestamps
 
+    field :id,           type: Object
     field :name,         type: String
-    field :store_id,     type: Integer
     field :in_stock,     type: Boolean
     field :backordered,  type: Boolean
     field :orders_count, type: Integer
@@ -95,17 +95,21 @@ elsif defined?(NoBrainer)
     field :latitude
     field :longitude
     field :description,  type: String
+
+    belongs_to :store, validates: false
   end
 
   class Store
     include NoBrainer::Document
 
+    field :id,   type: Object
     field :name, type: String
   end
 
   class Animal
     include NoBrainer::Document
 
+    field :id,   type: Object
     field :name, type: String
   end
 
--
libgit2 0.21.0