diff --git a/Gemfile b/Gemfile
index c36fb20..97953b0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,11 +1,13 @@
 source 'http://rubygems.org'
 
-ruby '2.2.3'
+ruby '2.2.4'
 
 gem 'slack-ruby-bot'
 gem 'wolfram'
 gem 'puma'
 gem 'sinatra'
+gem 'mechanize'
+gem 'nokogiri'
 
 group :development, :test do
   gem 'rake'
diff --git a/config.ru b/config.ru
index d193c85..cdfda3c 100644
--- a/config.ru
+++ b/config.ru
@@ -1,11 +1,11 @@
 $LOAD_PATH.unshift(File.dirname(__FILE__))
 
-require 'slack-numberman'
+require 'slack-pixiv'
 require 'web'
 
 Thread.new do
   begin
-    SlackNumberman::App.instance.run
+    SlackPixiv::App.instance.run
   rescue Exception => e
     STDERR.puts "ERROR: #{e}"
     STDERR.puts e.backtrace
@@ -13,4 +13,4 @@ Thread.new do
   end
 end
 
-run SlackNumberman::Web
+run SlackPixiv::Web
diff --git a/slack-numberman.rb b/slack-numberman.rb
deleted file mode 100644
index 3354730..0000000
--- a/slack-numberman.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-require 'slack-ruby-bot'
-require 'wolfram'
-require 'slack-numberman/commands/calculate'
-require 'slack-numberman/app'
diff --git a/slack-pixiv.rb b/slack-pixiv.rb
new file mode 100644
index 0000000..43d6f12
--- /dev/null
+++ b/slack-pixiv.rb
@@ -0,0 +1,4 @@
+require 'slack-ruby-bot'
+require 'wolfram'
+require 'slack-pixiv/commands/calculate'
+require 'slack-pixiv/app'
diff --git a/slack-numberman/app.rb b/slack-pixiv/app.rb
similarity index 65%
rename from slack-numberman/app.rb
rename to slack-pixiv/app.rb
index f57a6de..a933a7a 100644
--- a/slack-numberman/app.rb
+++ b/slack-pixiv/app.rb
@@ -1,4 +1,4 @@
-module SlackNumberman
+module SlackPixiv
   class App < SlackRubyBot::App
   end
 end
diff --git a/slack-numberman/commands/calculate.rb b/slack-pixiv/commands/calculate.rb
similarity index 100%
rename from slack-numberman/commands/calculate.rb
rename to slack-pixiv/commands/calculate.rb