diff --git a/Gemfile b/Gemfile
index 11a624c2..4045d58f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,7 @@
 source ENV['GEM_SOURCE'] || 'https://rubygems.org'
 
+gem 'facterdb', git: 'https://github.com/bastelfreak/facterdb', branch: 'optional-symbolize-keys'
+
 gemspec
 
 gem 'facter', ENV['FACTER_GEM_VERSION'], :require => false
diff --git a/lib/rspec-puppet-facts.rb b/lib/rspec-puppet-facts.rb
index 0f5f0cd7..36f55e62 100644
--- a/lib/rspec-puppet-facts.rb
+++ b/lib/rspec-puppet-facts.rb
@@ -123,7 +123,7 @@ def on_supported_os_implementation(opts = {})
     # facter data (see FacterDB 0.5.2 for Facter releases 3.8 and 3.9). In this situation we need to
     # cycle through and downgrade Facter versions per platform type until we find matching Facter data.
     filter.each do |filter_spec|
-      versions = FacterDB.get_facts(filter_spec).to_h { |facts| [Gem::Version.new(facts[:facterversion]), facts] }
+      versions = FacterDB.get_facts(filter_spec, symbolize_keys: !RSpec.configuration.facterdb_string_keys).to_h { |facts| [Gem::Version.new(facts[:facterversion]), facts] }
 
       version, facts = versions.select { |v, _f| strict_requirement =~ v }.max_by { |v, _f| v }