diff --git a/.gitignore b/.gitignore
index 8f6fc81..e786654 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 *.gem
 Gemfile.lock
 gemfiles/*.lock
+.bundle/
diff --git a/.travis.yml b/.travis.yml
index 405de0d..20cf3f6 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,13 +1,13 @@
 language: ruby
 rvm:
-  - 2.2.7
-  - 2.3.4
-  - 2.4.1
-  - jruby-head
+  - 2.4
+  - 2.5
+  - 2.6
 gemfile:
   - gemfiles/ar_4.2.gemfile
-  - gemfiles/ar_5.0.gemfile
+  - gemfiles/ar_5.2.gemfile
+  - gemfiles/ar_6.0.gemfile
 matrix:
   fast_finish: true
-before_install: gem install bundler -v 1.11.2
+before_install: gem install bundler -v 2.0.1
 script: bundle exec rake spec
diff --git a/Appraisals b/Appraisals
index fc5aec5..bf953db 100644
--- a/Appraisals
+++ b/Appraisals
@@ -2,6 +2,10 @@ appraise 'ar-4.2' do
   gem 'activerecord', '~> 4.2.0'
 end
 
-appraise 'ar-5.0' do
-  gem 'activerecord', '~> 5.0.0'
+appraise 'ar-5.2' do
+  gem 'activerecord', '~> 5.2.0'
+end
+
+appraise 'ar-6.0' do
+  gem 'activerecord', '~> 6.0.0.beta'
 end
diff --git a/gemfiles/ar_4.2.gemfile b/gemfiles/ar_4.2.gemfile
index 88e5a3c..9be8642 100644
--- a/gemfiles/ar_4.2.gemfile
+++ b/gemfiles/ar_4.2.gemfile
@@ -4,4 +4,4 @@ source "https://rubygems.org"
 
 gem "activerecord", "~> 4.2.0"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/ar_5.0.gemfile b/gemfiles/ar_5.0.gemfile
index b9c1ad0..a7a9bb0 100644
--- a/gemfiles/ar_5.0.gemfile
+++ b/gemfiles/ar_5.0.gemfile
@@ -4,4 +4,4 @@ source "https://rubygems.org"
 
 gem "activerecord", "~> 5.0.0"
 
-gemspec :path => "../"
+gemspec path: "../"
diff --git a/gemfiles/ar_5.1.gemfile b/gemfiles/ar_5.1.gemfile
new file mode 100644
index 0000000..a7a9bb0
--- /dev/null
+++ b/gemfiles/ar_5.1.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activerecord", "~> 5.0.0"
+
+gemspec path: "../"
diff --git a/gemfiles/ar_5.2.gemfile b/gemfiles/ar_5.2.gemfile
new file mode 100644
index 0000000..a7a9bb0
--- /dev/null
+++ b/gemfiles/ar_5.2.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activerecord", "~> 5.0.0"
+
+gemspec path: "../"
diff --git a/gemfiles/ar_6.0.gemfile b/gemfiles/ar_6.0.gemfile
new file mode 100644
index 0000000..d007fef
--- /dev/null
+++ b/gemfiles/ar_6.0.gemfile
@@ -0,0 +1,7 @@
+# This file was generated by Appraisal
+
+source "https://rubygems.org"
+
+gem "activerecord", "~> 6.0.0.beta"
+
+gemspec path: "../"