Index: lib/cgi/html.rb
===================================================================
--- lib/cgi/html.rb	(Revision 37088)
+++ lib/cgi/html.rb	(Arbeitskopie)
@@ -1035,7 +1035,7 @@
       extend TagMaker
       methods = ""
       # - -
-      for element in %w[ SECTION NAV ARTICLE ASIDE HGROUP
+      for element in %w[ SECTION NAV ARTICLE ASIDE HGROUP HEADER
         FOOTER FIGURE FIGCAPTION S TIME U MARK RUBY BDI IFRAME
         VIDEO AUDIO CANVAS DATALIST OUTPUT PROGRESS METER DETAILS
         SUMMARY MENU DIALOG I B SMALL EM STRONG DFN CODE SAMP KBD
Index: test/cgi/test_cgi_tag_helper.rb
===================================================================
--- test/cgi/test_cgi_tag_helper.rb	(Revision 37088)
+++ test/cgi/test_cgi_tag_helper.rb	(Arbeitskopie)
@@ -338,4 +338,17 @@
   end
 =end
 
+  def test_cgi_tag_helper_html5
+    @environ = {
+      'REQUEST_METHOD' => 'GET',
+    }
+    ENV.update(@environ)
+    ## html5
+    cgi = CGI.new('html5')
+    assert_equal('<HEADER></HEADER>',cgi.header)
+    assert_equal('<FOOTER></FOOTER>',cgi.footer)
+    assert_equal('<ARTICLE></ARTICLE>',cgi.article)
+    assert_equal('<SECTION></SECTION>',cgi.section)
+  end
+
 end