diff --git a/Appraisals b/Appraisals
index dba4e49..5bd14fe 100644
--- a/Appraisals
+++ b/Appraisals
@@ -7,3 +7,8 @@ appraise 'rails-4' do
   gem 'rails', '~> 4.0'
   gem 'mongoid', '~> 4'
 end
+
+appraise 'rails-5' do
+  gem 'rails', '~> 5.0'
+  gem 'mongoid', '~> 6'
+end
diff --git a/gemfiles/rails_5.gemfile b/gemfiles/rails_5.gemfile
index 2819f26..5b4d9af 100644
--- a/gemfiles/rails_5.gemfile
+++ b/gemfiles/rails_5.gemfile
@@ -6,6 +6,6 @@ gem "jquery-rails"
 gem "responders"
 gem "test-unit", "~> 3.0"
 gem "rails", "~> 5.0"
-gem "mongoid", "~> 5"
+gem "mongoid", "~> 6"
 
 gemspec path: "../"
diff --git a/re_track.gemspec b/re_track.gemspec
index 188b176..8ff06de 100644
--- a/re_track.gemspec
+++ b/re_track.gemspec
@@ -17,7 +17,7 @@ Gem::Specification.new do |s|
   s.require_paths = ['lib']
 
   s.add_runtime_dependency 'rails'
-  s.add_runtime_dependency 'mongoid', '>= 3'
+  s.add_runtime_dependency 'mongoid', '>= 6'
   s.add_runtime_dependency 'activesupport'
 
   s.add_development_dependency 'rspec-rails'