diff --git a/test/rdoc/test_rdoc_servlet.rb b/test/rdoc/test_rdoc_servlet.rb
index c41c2c8ae7..7a5b15a6eb 100644
--- a/test/rdoc/test_rdoc_servlet.rb
+++ b/test/rdoc/test_rdoc_servlet.rb
@@ -1,5 +1,9 @@
 # frozen_string_literal: true
 require_relative 'helper'
+begin
+  require 'webrick'
+rescue LoadError
+end
 
 class TestRDocServlet < RDoc::TestCase