diff --git a/diversipub.gemspec b/diversipub.gemspec
index a931e8e..4abf3ca 100644
--- a/diversipub.gemspec
+++ b/diversipub.gemspec
@@ -43,6 +43,7 @@ Gem::Specification.new do |spec|
 
   spec.add_runtime_dependency 'rack',    '~> 2.2', '>= 2.2.7'
   spec.add_runtime_dependency 'sinatra', '~> 3.0', '>= 3.0.6'
+  spec.add_runtime_dependency 'webrick', '~> 1.8', '>= 1.8.1'
 
   spec.add_development_dependency 'pry',  '~> 0.14'
   spec.add_development_dependency 'rake', '~> 13.0'
diff --git a/lib/diversipub.rb b/lib/diversipub.rb
index 88a443a..5fe8eb3 100644
--- a/lib/diversipub.rb
+++ b/lib/diversipub.rb
@@ -2,6 +2,7 @@
 
 require 'rack'
 require 'sinatra/base'
+require 'webrick'
 
 require_relative 'diversipub/main'
 require_relative 'diversipub/rack_app'
diff --git a/lib/diversipub/main.rb b/lib/diversipub/main.rb
index 0f0f218..74a9ca3 100644
--- a/lib/diversipub/main.rb
+++ b/lib/diversipub/main.rb
@@ -24,13 +24,15 @@ module Diversipub
       p stdin
       p stdout
       p stderr
-      sleep 1 while @running
+
+      webrick_thread.join
       true
     end
 
     def finish
       puts 'finishing'
-      @running = false
+      webrick.shutdown
+      nil
     end
 
   private
@@ -50,5 +52,30 @@ module Diversipub
         [String(key).freeze, String(value).freeze]
       end.freeze
     end
+
+    def webrick_thread
+      @webrick_thread ||= Thread.start { webrick.start }
+    end
+
+    def webrick
+      @webrick ||= WEBrick::HTTPServer.new(webrick_options).tap do |webrick|
+        webrick.mount '/', Rack::Handler::WEBrick, rack_app
+      end
+    end
+
+    def webrick_options
+      @webrick_options ||= {
+        BindAddress: 'localhost',
+        Port: 8080,
+      }.freeze
+    end
+
+    def rack_app
+      @rack_app ||= RackApp.new sinatra_app
+    end
+
+    def sinatra_app
+      @sinatra_app ||= SinatraApp.new self
+    end
   end
 end
diff --git a/lib/diversipub/sinatra_app.rb b/lib/diversipub/sinatra_app.rb
index 8434ec1..886186e 100644
--- a/lib/diversipub/sinatra_app.rb
+++ b/lib/diversipub/sinatra_app.rb
@@ -19,5 +19,9 @@ module Diversipub
       # Disable default Sinatra servers & middleware.
       alias new new!
     end
+
+    get '/' do
+      'Hello, World!'
+    end
   end
 end