diff --git a/.devcontainer/README.md b/.devcontainer/README.md
index cc4675e..a719361 100644
--- a/.devcontainer/README.md
+++ b/.devcontainer/README.md
@@ -13,14 +13,18 @@ https://github.com/microsoft/vscode-dev-containers/tree/v0.140.1/containers/pupp
 
 	// Set *default* container specific settings.json values on container create.
 	"settings": {
-		"terminal.integrated.shell.linux": "/bin/bash"
+		"terminal.integrated.profiles.linux": {
+			"bash": {
+				"path": "bash",
+			}
+		}
 	},
 
 	// Add the IDs of extensions you want installed when the container is created.
 	"extensions": [
 		"puppet.puppet-vscode",
 		"rebornix.Ruby"
-	]
+	],
 
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
 	"forwardPorts": [],
diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index fe7a8b1..cdd65d2 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -5,7 +5,7 @@
 	"settings": {
 		"terminal.integrated.profiles.linux": {
 			"bash": {
-				"path": "bash",
+				"path": "bash"
 			}
 		}
 	},
diff --git a/.fixtures.yml b/.fixtures.yml
index 2296adb..761bda1 100644
--- a/.fixtures.yml
+++ b/.fixtures.yml
@@ -3,4 +3,6 @@
 ---
 fixtures:
   forge_modules:
-#     stdlib: "puppetlabs/stdlib"
+    stdlib:
+      repo: "puppetlabs/stdlib"
+      ref: "6.0.0"
diff --git a/.rubocop.yml b/.rubocop.yml
index 8f782e7..31e8248 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -4,7 +4,7 @@ require:
 - rubocop-rspec
 AllCops:
   DisplayCopNames: true
-  TargetRubyVersion: '2.4'
+  TargetRubyVersion: '2.5'
   Include:
   - "**/*.rb"
   Exclude:
diff --git a/Gemfile b/Gemfile
index a167b88..4eaa0c3 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,21 +13,31 @@ def location_for(place_or_version, fake_version = nil)
   end
 end
 
-ruby_version_segments = Gem::Version.new(RUBY_VERSION.dup).segments
-minor_version = ruby_version_segments[0..1].join('.')
-
 group :development do
-  gem "json", '= 2.0.4',                                         require: false if Gem::Requirement.create('~> 2.4.2').satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
-  gem "json", '= 2.1.0',                                         require: false if Gem::Requirement.create(['>= 2.5.0', '< 2.7.0']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
-  gem "json", '= 2.3.0',                                         require: false if Gem::Requirement.create(['>= 2.7.0', '< 2.8.0']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
-  gem "puppet-module-posix-default-r#{minor_version}", '~> 1.0', require: false, platforms: [:ruby]
-  gem "puppet-module-posix-dev-r#{minor_version}", '~> 1.0',     require: false, platforms: [:ruby]
-  gem "puppet-module-win-default-r#{minor_version}", '~> 1.0',   require: false, platforms: [:mswin, :mingw, :x64_mingw]
-  gem "puppet-module-win-dev-r#{minor_version}", '~> 1.0',       require: false, platforms: [:mswin, :mingw, :x64_mingw]
+  gem "json", '= 2.1.0',                           require: false if Gem::Requirement.create(['>= 2.5.0', '< 2.7.0']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
+  gem "json", '= 2.3.0',                           require: false if Gem::Requirement.create(['>= 2.7.0', '< 3.0.0']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
+  gem "json", '= 2.5.1',                           require: false if Gem::Requirement.create(['>= 3.0.0', '< 3.0.5']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
+  gem "json", '= 2.6.1',                           require: false if Gem::Requirement.create(['>= 3.1.0', '< 3.1.3']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
+  gem "json", '= 2.6.3',                           require: false if Gem::Requirement.create(['>= 3.2.0', '< 4.0.0']).satisfied_by?(Gem::Version.new(RUBY_VERSION.dup))
+  gem "voxpupuli-puppet-lint-plugins", '~> 4.0',   require: false
+  gem "facterdb", '~> 1.18',                       require: false
+  gem "metadata-json-lint", '>= 2.0.2', '< 4.0.0', require: false
+  gem "puppetlabs_spec_helper", '~> 5.0',          require: false
+  gem "rspec-puppet-facts", '~> 2.0',              require: false
+  gem "codecov", '~> 0.2',                         require: false
+  gem "dependency_checker", '~> 0.2',              require: false
+  gem "parallel_tests", '= 3.12.1',                require: false
+  gem "pry", '~> 0.10',                            require: false
+  gem "simplecov-console", '~> 0.5',               require: false
+  gem "puppet-debugger", '~> 1.0',                 require: false
+  gem "rubocop", '= 1.6.1',                        require: false
+  gem "rubocop-performance", '= 1.9.1',            require: false
+  gem "rubocop-rspec", '= 2.0.1',                  require: false
+  gem "rb-readline", '= 0.5.5',                    require: false, platforms: [:mswin, :mingw, :x64_mingw]
 end
 group :system_tests do
-  gem "puppet-module-posix-system-r#{minor_version}", '~> 1.0', require: false, platforms: [:ruby]
-  gem "puppet-module-win-system-r#{minor_version}", '~> 1.0',   require: false, platforms: [:mswin, :mingw, :x64_mingw]
+  gem "puppet_litmus", '< 1.0.0', require: false, platforms: [:ruby, :x64_mingw]
+  gem "serverspec", '~> 2.41',    require: false
 end
 
 puppet_version = ENV['PUPPET_GEM_VERSION']
diff --git a/metadata.json b/metadata.json
index 0983ed5..e17752b 100644
--- a/metadata.json
+++ b/metadata.json
@@ -10,7 +10,7 @@
   "dependencies": [
     {
       "name": "puppetlabs-stdlib",
-      "version_requirement": ">= 4.0.0 < 8.1.0"
+      "version_requirement": ">= 6.0.0 < 8.5.0"
     }
   ],
   "operatingsystem_support": [
@@ -33,7 +33,7 @@
       ]
     },
     {
-      "operatingsystem": "RedHat RHEL",
+      "operatingsystem": "RedHat",
       "operatingsystemrelease": [
         "7",
         "8"
@@ -56,7 +56,7 @@
     "ldap",
     "authentication"
   ],
-  "pdk-version": "2.2.0",
+  "pdk-version": "2.7.1",
   "template-url": "https://github.com/puppetlabs/pdk-templates#main",
-  "template-ref": "tags/2.3.0-0-g8aaceff"
+  "template-ref": "heads/main-0-gc6d4446"
 }
diff --git a/pdk.yaml b/pdk.yaml
new file mode 100644
index 0000000..4bef4bd
--- /dev/null
+++ b/pdk.yaml
@@ -0,0 +1,2 @@
+---
+ignore: []
diff --git a/spec/classes/config_spec.rb b/spec/classes/config_spec.rb
new file mode 100644
index 0000000..ba7ac7a
--- /dev/null
+++ b/spec/classes/config_spec.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'nslcd::config' do
+  on_supported_os.each do |os, os_facts|
+    context "on #{os}" do
+      let(:facts) { os_facts }
+
+      it { is_expected.to compile.with_all_deps }
+    end
+  end
+end
diff --git a/spec/classes/install_spec.rb b/spec/classes/install_spec.rb
new file mode 100644
index 0000000..aa0efe2
--- /dev/null
+++ b/spec/classes/install_spec.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'nslcd::install' do
+  on_supported_os.each do |os, os_facts|
+    context "on #{os}" do
+      let(:facts) { os_facts }
+
+      it { is_expected.to compile.with_all_deps }
+    end
+  end
+end
diff --git a/spec/classes/nslcd_spec.rb b/spec/classes/nslcd_spec.rb
new file mode 100644
index 0000000..8093b0a
--- /dev/null
+++ b/spec/classes/nslcd_spec.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'nslcd' do
+  on_supported_os.each do |os, os_facts|
+    context "on #{os}" do
+      let(:facts) { os_facts }
+
+      it { is_expected.to compile.with_all_deps }
+    end
+  end
+end
diff --git a/spec/classes/params_spec.rb b/spec/classes/params_spec.rb
new file mode 100644
index 0000000..af43661
--- /dev/null
+++ b/spec/classes/params_spec.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'nslcd::params' do
+  on_supported_os.each do |os, os_facts|
+    context "on #{os}" do
+      let(:facts) { os_facts }
+
+      it { is_expected.to compile.with_all_deps }
+    end
+  end
+end
diff --git a/spec/classes/service_spec.rb b/spec/classes/service_spec.rb
new file mode 100644
index 0000000..96ea262
--- /dev/null
+++ b/spec/classes/service_spec.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe 'nslcd::service' do
+  on_supported_os.each do |os, os_facts|
+    context "on #{os}" do
+      let(:facts) { os_facts }
+
+      it { is_expected.to compile.with_all_deps }
+    end
+  end
+end