diff --git a/lib/nokogiri/html4/sax/push_parser.rb b/lib/nokogiri/html4/sax/push_parser.rb
index d77b785ac1c..0c9f4dda0f0 100644
--- a/lib/nokogiri/html4/sax/push_parser.rb
+++ b/lib/nokogiri/html4/sax/push_parser.rb
@@ -8,7 +8,7 @@ class PushParser
         # operating
         attr_accessor :document
 
-        def initialize(doc = HTML4::SAX::Document.new, file_name = nil, encoding = "UTF-8")
+        def initialize(doc = HTML4::SAX::Document.new, file_name_ = nil, encoding_ = "UTF-8", file_name: file_name_, encoding: encoding_)
           @document = doc
           @encoding = encoding
           @sax_parser = HTML4::SAX::Parser.new(doc, @encoding)
diff --git a/test/html4/sax/test_push_parser.rb b/test/html4/sax/test_push_parser.rb
index 6eb83c8339b..eb726e15e73 100644
--- a/test/html4/sax/test_push_parser.rb
+++ b/test/html4/sax/test_push_parser.rb
@@ -66,4 +66,17 @@
   it :test_default_options do
     assert_equal(0, parser.options)
   end
+
+  it :test_keyword_arguments do
+    parser = Nokogiri::HTML4::SAX::PushParser.new(Nokogiri::SAX::TestCase::Doc.new, encoding: 'UTF-8')
+
+    parser << (<<~HTML)
+      <p id="asdfasdf">
+        <!-- This is a comment -->
+        Paragraph 1
+      </p>
+    HTML
+    parser.finish
+    assert_equal([" This is a comment "], parser.document.comments)
+  end
 end