diff --git a/lib/puppet/functions/foreman/foreman.rb b/lib/puppet/functions/foreman/foreman.rb
index 7e1f1da52..ceec690ba 100644
--- a/lib/puppet/functions/foreman/foreman.rb
+++ b/lib/puppet/functions/foreman/foreman.rb
@@ -71,7 +71,7 @@ def foreman(item, search, per_page = "20", foreman_url = "https://localhost", fo
       if use_tfmproxy
         configfile = '/etc/foreman-proxy/settings.yml'
         configfile = use_tfmproxy if use_tfmproxy.is_a? String
-        raise Puppet::ParseError, "File #{configfile} not found while use_tfmproxy is enabled" unless File.exists?(configfile)
+        raise Puppet::ParseError, "File #{configfile} not found while use_tfmproxy is enabled" unless File.exist?(configfile)
         tfmproxy = YAML.load(File.read(configfile))
         uri = URI.parse(tfmproxy[:foreman_url])
         http = Net::HTTP.new(uri.host, uri.port)
diff --git a/metadata.json b/metadata.json
index c0a4b3918..e1d37311a 100644
--- a/metadata.json
+++ b/metadata.json
@@ -48,7 +48,7 @@
   "requirements": [
     {
       "name": "puppet",
-      "version_requirement": ">= 7.0.0 < 8.0.0"
+      "version_requirement": ">= 7.0.0 < 9.0.0"
     }
   ],
   "operatingsystem_support": [
diff --git a/spec/functions/foreman_foreman_spec.rb b/spec/functions/foreman_foreman_spec.rb
index 24dad6863..9e12d32f1 100644
--- a/spec/functions/foreman_foreman_spec.rb
+++ b/spec/functions/foreman_foreman_spec.rb
@@ -10,6 +10,10 @@
     is_expected.to run.with_params().and_raise_error(ArgumentError)
   end
 
+  it 'should throw an error with filter_result=true' do
+    is_expected.to run.with_params('hosts', 'hostgroup=Grid', '20', 'https://foreman.example.com', 'my_api_foreman_user', 'my_api_foreman_pass', 10, true).and_raise_error(Puppet::ParseError, /Foreman: Invalid filter_result/)
+  end
+
   it 'should succeed with no timeout specified' do
     stub_request(:get, "https://foreman.example.com/api/hosts?per_page=20&search=hostgroup=Grid").
       with(basic_auth: ['my_api_foreman_user', 'my_api_foreman_pass']).