diff --git a/Gemfile b/Gemfile
index 8e65b1d..1d81a90 100644
--- a/Gemfile
+++ b/Gemfile
@@ -30,6 +30,7 @@ gem 'locale',                   '~> 2.1'
 gem 'whenever', :require => false
 gem 'eita-jrails', '~> 0.10.0', require: 'jrails'
 gem 'diffy',                    '~> 3.0'
+gem 'slim'
 
 # API dependencies
 gem 'grape',                    '~> 0.12'
@@ -60,9 +61,6 @@ group :production do
   gem 'dalli', '~> 2.7.0'
 end
 
-group :development do
-end
-
 group :development, :test do
   gem 'spring'
 end
diff --git a/debian/control b/debian/control
index 7a1cb39..9ea85d4 100644
--- a/debian/control
+++ b/debian/control
@@ -80,6 +80,7 @@ Depends: adduser,
          ruby-uglifier,
          ruby-whenever,
          ruby-will-paginate (>> 3.0.5-1),
+         ruby-slim,
          tango-icon-theme,
          unicorn (>= 4.8),
          ${misc:Depends}
diff --git a/script/erb2slim b/script/erb2slim
new file mode 100755
index 0000000..721e81d
--- /dev/null
+++ b/script/erb2slim
@@ -0,0 +1,38 @@
+#!/usr/bin/env ruby
+
+require 'html2haml'
+require 'haml2slim'
+
+def run cmd
+  puts cmd
+  system cmd
+end
+
+def convert erb
+  run <<-CMD
+    html2haml --erb #{erb} | haml2slim | sed 's/ *\\\\$//g' > $(echo #{erb} | sed 's/erb/slim/') && rm #{erb}
+  CMD
+end
+
+erb = ARGV[0]
+if erb and not erb.empty?
+  if File.file? erb
+    convert erb
+  else
+    STDERR.puts "file '#{erb}' not found"
+  end
+else
+  GLOB_ALL = '**/*.erb'
+  GLOB_HTML = '**/*.html.erb'
+  GLOB = GLOB_HTML
+
+  Dir.glob(GLOB).each do |erb|
+    if File.file? erb
+      convert erb
+    elsif File.symlink? erb
+      run <<-CMD
+      mv #{erb} $(echo #{erb} | sed 's/erb/slim/')
+      CMD
+    end
+  end
+end
--
libgit2 0.21.2