diff --git a/Gemfile b/Gemfile
index fbefdb3..a83fd7f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -23,4 +23,5 @@ group :test do
   gem 'factory_girl'
   gem 'capybara'
   gem 'database_cleaner'
+  gem 'appraisal'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index bf90f93..bbc2f90 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -34,6 +34,10 @@ GEM
       multi_json (~> 1.3)
       thread_safe (~> 0.1)
       tzinfo (~> 0.3.37)
+    appraisal (2.1.0)
+      bundler
+      rake
+      thor (>= 0.14.0)
     arel (4.0.2)
     awesome_nested_set (3.0.2)
       activerecord (>= 4.0.0, < 5)
@@ -137,6 +141,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  appraisal
   capybara
   carrierwave
   database_cleaner