diff --git a/Rakefile b/Rakefile
new file mode 100644
index 0000000..310fee6
--- /dev/null
+++ b/Rakefile
@@ -0,0 +1,19 @@
+require 'rake'
+
+begin
+  require 'jeweler'
+  Jeweler::Tasks.new do |gemspec|
+    gemspec.name = "decisiontree"
+    gemspec.summary = "ID3-based implementation of the M.L. Decision Tree algorithm"
+    gemspec.description = gemspec.summary
+    gemspec.email = "ilya@igvita.com"
+    gemspec.homepage = "http://github.com/igrigorik/decisiontree"
+    gemspec.authors = ["Ilya Grigorik"]
+    gemspec.rubyforge_project = "decisiontree"
+  end
+
+  Jeweler::GemcutterTasks.new
+rescue LoadError
+  puts "Jeweler not available. Install it with: sudo gem install technicalpickles-jeweler -s http://gems.github.com"
+end
+
diff --git a/VERSION b/VERSION
new file mode 100644
index 0000000..9e11b32
--- /dev/null
+++ b/VERSION
@@ -0,0 +1 @@
+0.3.1
diff --git a/decisiontree.gemspec b/decisiontree.gemspec
index 63d5c70..2d9589e 100644
--- a/decisiontree.gemspec
+++ b/decisiontree.gemspec
@@ -1,29 +1,60 @@
-spec = Gem::Specification.new do |s|
-  s.name = 'decisiontree'
-  s.version = '0.3.1'
-  s.date = '2009-02-21'
-  s.summary = 'ID3-based implementation of the M.L. Decision Tree algorithm'
-  s.description = s.summary
-  s.email = 'ilya@igvita.com'
-  s.homepage = "http://github.com/igrigorik/decisiontree"
-  s.has_rdoc = true
-  s.authors = ["Ilya Grigorik"]
-  s.rubyforge_project = "decisiontree"
- 
-  # ruby -rpp -e' pp `git ls-files`.split("\n") '
-  s.files = ["CHANGELOG.txt",
-   "README.rdoc",
-   "decisiontree.gemspec",
-   "examples/continuous-id3.rb",
-   "examples/data/continuous-test.txt",
-   "examples/data/continuous-training.txt",
-   "examples/data/discrete-test.txt",
-   "examples/data/discrete-training.txt",
-   "examples/discrete-id3.rb",
-   "examples/simple.rb",
-   "lib/decisiontree.rb",
-   "lib/decisiontree/id3_tree.rb",
-   "test/helper.rb",
-   "test/test_decisiontree.rb"]
+# Generated by jeweler
+# DO NOT EDIT THIS FILE DIRECTLY
+# Instead, edit Jeweler::Tasks in Rakefile, and run the gemspec command
+# -*- encoding: utf-8 -*-
 
+Gem::Specification.new do |s|
+  s.name = %q{decisiontree}
+  s.version = "0.3.1"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.authors = ["Ilya Grigorik"]
+  s.date = %q{2010-10-03}
+  s.description = %q{ID3-based implementation of the M.L. Decision Tree algorithm}
+  s.email = %q{ilya@igvita.com}
+  s.extra_rdoc_files = [
+    "README.rdoc"
+  ]
+  s.files = [
+    "CHANGELOG.txt",
+     "README.rdoc",
+     "Rakefile",
+     "VERSION",
+     "decisiontree.gemspec",
+     "examples/continuous-id3.rb",
+     "examples/data/continuous-test.txt",
+     "examples/data/continuous-training.txt",
+     "examples/data/discrete-test.txt",
+     "examples/data/discrete-training.txt",
+     "examples/discrete-id3.rb",
+     "examples/simple.rb",
+     "lib/decisiontree.rb",
+     "lib/decisiontree/id3_tree.rb",
+     "test/helper.rb",
+     "test/test_decisiontree.rb"
+  ]
+  s.homepage = %q{http://github.com/igrigorik/decisiontree}
+  s.rdoc_options = ["--charset=UTF-8"]
+  s.require_paths = ["lib"]
+  s.rubyforge_project = %q{decisiontree}
+  s.rubygems_version = %q{1.3.7}
+  s.summary = %q{ID3-based implementation of the M.L. Decision Tree algorithm}
+  s.test_files = [
+    "test/helper.rb",
+     "test/test_decisiontree.rb",
+     "examples/continuous-id3.rb",
+     "examples/discrete-id3.rb",
+     "examples/simple.rb"
+  ]
+
+  if s.respond_to? :specification_version then
+    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
+    s.specification_version = 3
+
+    if Gem::Version.new(Gem::VERSION) >= Gem::Version.new('1.2.0') then
+    else
+    end
+  else
+  end
 end
+