diff --git a/.github/workflows/ci_jruby.yml b/.github/workflows/ci_jruby.yml
new file mode 100644
index 0000000..9a64904
--- /dev/null
+++ b/.github/workflows/ci_jruby.yml
@@ -0,0 +1,67 @@
+---
+name: CI Jruby
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  rspec:
+    runs-on: ubuntu-latest
+    services:
+      mysql:
+        image: mysql/mysql-server
+        ports:
+          - "3306:3306"
+        env:
+          MYSQL_ROOT_PASSWORD: root
+          MYSQL_DATABASE: closure_tree_test
+          MYSQL_ROOT_HOST: '%'
+      postgres:
+        image: 'postgres'
+        ports: ['5432:5432']
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: closure_tree_test
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    strategy:
+      fail-fast: false
+      matrix:
+        rails:
+          - activerecord_7.0
+          - activerecord_6.1
+        adapter:
+          - 'sqlite3:///:memory:'
+          - mysql2://root:root@0/closure_tree_test
+          - postgres://closure_tree:closure_tree@0/closure_tree_test
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: jruby
+          bundler-cache: true
+          rubygems: latest
+        env:
+          BUNDLE_GEMFILE: gemfiles/${{ matrix.rails }}.gemfile
+          RAILS_ENV: test
+
+      - name: RSpec
+        env:
+          RAILS_VERSION: ${{ matrix.rails }}
+          DB_ADAPTER: ${{ matrix.adapter }}
+          BUNDLE_GEMFILE: gemfiles/${{ matrix.rails }}.gemfile
+          WITH_ADVISORY_LOCK_PREFIX: ${{ github.run_id }}
+        run: bin/rake
diff --git a/.github/workflows/ci_truffleruby.yml b/.github/workflows/ci_truffleruby.yml
new file mode 100644
index 0000000..980de7b
--- /dev/null
+++ b/.github/workflows/ci_truffleruby.yml
@@ -0,0 +1,70 @@
+---
+name: CI Truffleruby
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  rspec:
+    runs-on: ubuntu-latest
+    services:
+      mysql:
+        image: mysql/mysql-server
+        ports:
+          - "3306:3306"
+        env:
+          MYSQL_ROOT_PASSWORD: root
+          MYSQL_DATABASE: closure_tree_test
+          MYSQL_ROOT_HOST: '%'
+      postgres:
+        image: 'postgres'
+        ports: ['5432:5432']
+        env:
+          POSTGRES_PASSWORD: postgres
+          POSTGRES_DB: closure_tree_test
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+
+    strategy:
+      fail-fast: false
+      matrix:
+        ruby:
+          - truffleruby
+        rails:
+          - activerecord_7.0
+          - activerecord_6.1
+          - activerecord_6.0
+        adapter:
+          - 'sqlite3:///:memory:'
+          - mysql2://root:root@0/closure_tree_test
+          - postgres://closure_tree:closure_tree@0/closure_tree_test
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: truffleruby
+          bundler-cache: true
+          rubygems: latest
+        env:
+          BUNDLE_GEMFILE: gemfiles/${{ matrix.rails }}.gemfile
+          RAILS_ENV: test
+
+      - name: RSpec
+        env:
+          RAILS_VERSION: ${{ matrix.rails }}
+          DB_ADAPTER: ${{ matrix.adapter }}
+          BUNDLE_GEMFILE: gemfiles/${{ matrix.rails }}.gemfile
+          WITH_ADVISORY_LOCK_PREFIX: ${{ github.run_id }}
+        run: bin/rake
diff --git a/Rakefile b/Rakefile
index f8303ce..e93b025 100644
--- a/Rakefile
+++ b/Rakefile
@@ -8,24 +8,18 @@ RSpec::Core::RakeTask.new(:spec) do |task|
   task.pattern = 'spec/closure_tree/*_spec.rb'
 end
 
-task default: [:spec, :test]
+task default: %i[spec test]
 
 namespace :spec do
   desc 'Run all spec variants'
   task :all do
     rake = 'bin/rake'
-    fail unless system("#{rake} spec:generators")
 
-    [['', ''], ['db_prefix_', ''], ['', '_db_suffix'], ['abc_', '_123']].each do |prefix, suffix|
+    [['', ''], ['db_prefix_', ''], ['', '_db_suffix'], %w[abc_ _123]].each do |prefix, suffix|
       env = "DB_PREFIX=#{prefix} DB_SUFFIX=#{suffix}"
-      fail unless system("#{rake} spec #{env}")
+      raise unless system("#{rake} spec #{env}")
     end
   end
-
-  desc 'Run generator specs'
-  RSpec::Core::RakeTask.new(:generators) do |task|
-    task.pattern = 'spec/generators/*_spec.rb'
-  end
 end
 
 Rake::TestTask.new do |t|
@@ -35,13 +29,14 @@ Rake::TestTask.new do |t|
   t.verbose = true
 end
 
-require 'github_changelog_generator/task'
-GitHubChangelogGenerator::RakeTask.new :changelog do |config|
-  config.user = 'ClosureTree'
-  config.project = 'closure_tree'
-  config.issues = false
-  config.future_release = '5.2.0'
-  config.since_tag = 'v7.4.0'
+if RUBY_ENGINE == 'ruby'
+  require 'github_changelog_generator/task'
+  GitHubChangelogGenerator::RakeTask.new :changelog do |config|
+    config.user = 'ClosureTree'
+    config.project = 'closure_tree'
+    config.issues = false
+    config.future_release = '5.2.0'
+    config.since_tag = 'v7.4.0'
+  end
 end
-
-task :default => "spec:all"
\ No newline at end of file
+task default: 'spec:all'
diff --git a/gemfiles/activerecord_6.0.gemfile b/gemfiles/activerecord_6.0.gemfile
index f015082..7a971a3 100644
--- a/gemfiles/activerecord_6.0.gemfile
+++ b/gemfiles/activerecord_6.0.gemfile
@@ -2,10 +2,15 @@
 
 source "https://rubygems.org"
 
-gem "bump", "~> 0.10.0"
-gem "github_changelog_generator", "~> 1.16"
 gem "activerecord", "~> 6.0.0"
 
+platforms :mri do
+  group :development do
+    gem "bump", "~> 0.10.0"
+    gem "github_changelog_generator", "~> 1.16"
+  end
+end
+
 platforms :ruby do
   gem "mysql2"
   gem "pg"
diff --git a/gemfiles/activerecord_6.1.gemfile b/gemfiles/activerecord_6.1.gemfile
index c472b92..d208a86 100644
--- a/gemfiles/activerecord_6.1.gemfile
+++ b/gemfiles/activerecord_6.1.gemfile
@@ -2,10 +2,15 @@
 
 source "https://rubygems.org"
 
-gem "bump", "~> 0.10.0"
-gem "github_changelog_generator", "~> 1.16"
 gem "activerecord", "~> 6.1.0"
 
+platforms :mri do
+  group :development do
+    gem "bump", "~> 0.10.0"
+    gem "github_changelog_generator", "~> 1.16"
+  end
+end
+
 platforms :ruby do
   gem "mysql2"
   gem "pg"
diff --git a/gemfiles/activerecord_7.0.gemfile b/gemfiles/activerecord_7.0.gemfile
index b3f4383..8cf38ff 100644
--- a/gemfiles/activerecord_7.0.gemfile
+++ b/gemfiles/activerecord_7.0.gemfile
@@ -2,10 +2,15 @@
 
 source "https://rubygems.org"
 
-gem "bump", "~> 0.10.0"
-gem "github_changelog_generator", "~> 1.16"
 gem "activerecord", "~> 7.0.0"
 
+platforms :mri do
+  group :development do
+    gem "bump", "~> 0.10.0"
+    gem "github_changelog_generator", "~> 1.16"
+  end
+end
+
 platforms :ruby do
   gem "mysql2"
   gem "pg"
diff --git a/gemfiles/activerecord_edge.gemfile b/gemfiles/activerecord_edge.gemfile
index 477f6da..2473814 100644
--- a/gemfiles/activerecord_edge.gemfile
+++ b/gemfiles/activerecord_edge.gemfile
@@ -2,10 +2,15 @@
 
 source "https://rubygems.org"
 
-gem "bump", "~> 0.10.0"
-gem "github_changelog_generator", "~> 1.16"
 gem "activerecord", github: "rails/rails"
 
+platforms :mri do
+  group :development do
+    gem "bump", "~> 0.10.0"
+    gem "github_changelog_generator", "~> 1.16"
+  end
+end
+
 platforms :ruby do
   gem "mysql2"
   gem "pg"
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 5f58ad4..eba943f 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-require 'simplecov'
+
 require 'database_cleaner'
 require 'closure_tree/test/matcher'
 require 'tmpdir'
@@ -13,8 +13,11 @@
 
 
 # Start Simplecov
-SimpleCov.start do
-  add_filter 'spec/'
+if RUBY_ENGINE == 'ruby'
+  require 'simplecov'
+  SimpleCov.start do
+    add_filter '/spec/'
+  end
 end
 
 ActiveRecord::Base.configurations = {