diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index ea59806..5f40b09 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,42 +1,41 @@
 ---
 stages:
   - syntax
   - unit
 
 cache:
   paths:
     - vendor/bundle
 
 before_script:
   - bundle -v
   - rm Gemfile.lock || true
   - gem update --system $RUBYGEMS_VERSION
   - gem --version
   - bundle -v
   - bundle install --without system_tests --path vendor/bundle --jobs $(nproc)
 
-parallel_spec-Ruby 2.1.9-Puppet ~> 4.0:
-  stage: unit
-  image: ruby:2.1.9
+syntax lint metadata_lint check:symlinks check:git_ignore check:dot_underscore check:test_file rubocop-Ruby 2.5.1-Puppet ~> 6.0:
+  stage: syntax
+  image: ruby:2.5.1
   script:
-    - bundle exec rake parallel_spec
+    - bundle exec rake syntax lint metadata_lint check:symlinks check:git_ignore check:dot_underscore check:test_file rubocop
   variables:
-    PUPPET_GEM_VERSION: '~> 4.0'
-    RUBYGEMS_VERSION: '2.7.8'
+    PUPPET_GEM_VERSION: '~> 6.0'
 
-syntax lint metadata_lint check:symlinks check:git_ignore check:dot_underscore check:test_file rubocop-Ruby 2.4.4-Puppet ~> 5.5:
-  stage: syntax
-  image: ruby:2.4.4
+parallel_spec-Ruby 2.5.1-Puppet ~> 6.0:
+  stage: unit
+  image: ruby:2.5.1
   script:
-    - bundle exec rake syntax lint metadata_lint check:symlinks check:git_ignore check:dot_underscore check:test_file rubocop
+    - bundle exec rake parallel_spec
   variables:
-    PUPPET_GEM_VERSION: '~> 5.5'
+    PUPPET_GEM_VERSION: '~> 6.0'
 
-parallel_spec-Ruby 2.4.4-Puppet ~> 5.5:
+parallel_spec-Ruby 2.4.4-Puppet ~> 5.0:
   stage: unit
   image: ruby:2.4.4
   script:
     - bundle exec rake parallel_spec
   variables:
-    PUPPET_GEM_VERSION: '~> 5.5'
+    PUPPET_GEM_VERSION: '~> 5.0'
 
diff --git a/metadata.json b/metadata.json
index be908d1..3c191d5 100644
--- a/metadata.json
+++ b/metadata.json
@@ -1,103 +1,103 @@
 {
   "name": "ssm-munin",
   "version": "0.1.0",
   "author": "ssm",
   "summary": "Configure munin master, node and plugins",
   "license": "Apache-2.0",
   "source": "https://github.com/ssm/ssm-munin",
   "project_page": "https://github.com/ssm/ssm-munin",
   "issues_url": "https://github.com/ssm/ssm-munin/issues",
   "dependencies": [
     {
       "name": "puppetlabs/stdlib",
       "version_requirement": ">= 2.3.0 < 6.0.0"
     }
   ],
   "operatingsystem_support": [
     {
       "operatingsystem": "Archlinux",
       "operatingsystemrelease": [
         "4"
       ]
     },
     {
       "operatingsystem": "CentOS",
       "operatingsystemrelease": [
         "5",
         "6",
         "7"
       ]
     },
     {
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
         "8",
         "9"
       ]
     },
     {
       "operatingsystem": "OracleLinux",
       "operatingsystemrelease": [
         "5",
         "6",
         "7"
       ]
     },
     {
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [
         "5",
         "6",
         "7"
       ]
     },
     {
       "operatingsystem": "Scientific",
       "operatingsystemrelease": [
         "5",
         "6",
         "7"
       ]
     },
     {
       "operatingsystem": "SmartOS"
     },
     {
       "operatingsystem": "Ubuntu",
       "operatingsystemrelease": [
         "14.04",
         "16.04",
         "18.04"
       ]
     },
     {
       "operatingsystem": "FreeBSD",
       "operatingsystemrelease": [
         "9",
         "10"
       ]
     },
     {
       "operatingsystem": "DragonFly"
     },
     {
       "operatingsystem": "OpenBSD"
     }
   ],
   "requirements": [
     {
       "name": "puppet",
       "version_requirement": ">= 4.7.0 < 6.0.0"
     }
   ],
   "tags": [
     "munin",
     "monitoring",
     "graphing",
     "performance",
     "trending"
   ],
   "pdk-version": "1.9.0",
-  "template-url": "file:///opt/puppetlabs/pdk/share/cache/pdk-templates.git",
-  "template-ref": "1.9.0-0-g7281db5"
-}
+  "template-url": "https://github.com/puppetlabs/pdk-templates",
+  "template-ref": "1.9.1-0-g6945d31"
+}
\ No newline at end of file
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 0d5efc0..70d81e0 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,47 +1,51 @@
+RSpec.configure do |c|
+  c.mock_with :rspec
+end
+
 require 'puppetlabs_spec_helper/module_spec_helper'
 require 'rspec-puppet-facts'
 
 require 'spec_helper_local' if File.file?(File.join(File.dirname(__FILE__), 'spec_helper_local.rb'))
 
 include RspecPuppetFacts
 
 default_facts = {
   puppetversion: Puppet.version,
   facterversion: Facter.version,
 }
 
 default_fact_files = [
   File.expand_path(File.join(File.dirname(__FILE__), 'default_facts.yml')),
   File.expand_path(File.join(File.dirname(__FILE__), 'default_module_facts.yml')),
 ]
 
 default_fact_files.each do |f|
   next unless File.exist?(f) && File.readable?(f) && File.size?(f)
 
   begin
-    default_facts.merge!(YAML.safe_load(File.read(f)))
+    default_facts.merge!(YAML.safe_load(File.read(f), [], [], true))
   rescue => e
     RSpec.configuration.reporter.message "WARNING: Unable to load #{f}: #{e}"
   end
 end
 
 RSpec.configure do |c|
   c.default_facts = default_facts
   c.before :each do
     # set to strictest setting for testing
     # by default Puppet runs at warning level
     Puppet.settings[:strict] = :warning
   end
   c.filter_run_excluding(bolt: true) unless ENV['GEM_BOLT']
   c.after(:suite) do
   end
 end
 
 def ensure_module_defined(module_name)
   module_name.split('::').reduce(Object) do |last_module, next_module|
     last_module.const_set(next_module, Module.new) unless last_module.const_defined?(next_module, false)
     last_module.const_get(next_module, false)
   end
 end
 
 # 'spec_overrides' from sync.yml will appear below this line