diff --git a/app/finders/users.rb b/app/finders/users.rb
index a9f86317..f9d5cbdc 100644
--- a/app/finders/users.rb
+++ b/app/finders/users.rb
@@ -4,6 +4,7 @@ require_relative 'users/oembed_api'
 require_relative 'users/rss_generator'
 require_relative 'users/author_id_brute_forcing'
 require_relative 'users/login_error_messages'
+require_relative 'users/yoast_seo_author_sitemap.rb'
 
 module WPScan
   module Finders
@@ -19,6 +20,7 @@ module WPScan
             Users::WpJsonApi.new(target) <<
             Users::OembedApi.new(target) <<
             Users::RSSGenerator.new(target) <<
+            Users::YoastSeoAuthorSitemap.new(target) <<
             Users::AuthorIdBruteForcing.new(target) <<
             Users::LoginErrorMessages.new(target)
         end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index b2dbabe5..f21b4e64 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -97,9 +97,9 @@ module WebMock
 end
 # rubocop:enabled all
 
-SPECS                    = Pathname.new(__FILE__).dirname.to_s
-FIXTURES                 = File.join(SPECS, 'fixtures')
-FINDERS_FIXTURES         = File.join(FIXTURES, 'finders')
-DYNAMIC_FINDERS_FIXTURES = File.join(FIXTURES, 'dynamic_finders')
+SPECS                    = Pathname.new(__FILE__).dirname
+FIXTURES                 = SPECS.join('fixtures')
+FINDERS_FIXTURES         = FIXTURES.join('finders')
+DYNAMIC_FINDERS_FIXTURES = FIXTURES.join('dynamic_finders')
 
-redefine_constant(:DB_DIR, File.join(FIXTURES, 'db'))
+redefine_constant(:DB_DIR, FIXTURES.join('db'))