diff --git a/Gemfile b/Gemfile
index a49f6b13..e876375c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,21 +1,12 @@
-source :rubygems
 ruby '1.9.3' rescue nil
 
+source :rubygems
+gemspec
+
 gem 'travis-support', github: 'travis-ci/travis-support'
 gem 'travis-core',    github: 'travis-ci/travis-core'
 gem 'hubble',         github: 'roidrage/hubble'
-
-gem 'backports',    '~> 2.5'
-gem 'pg',           '~> 0.13.2'
-gem 'newrelic_rpm', '~> 3.3.0'
-gem 'thin',         '~> 1.4'
-gem 'sinatra'
-gem 'sinatra-contrib'
-gem 'redcarpet'
-
-group :production do
-  gem 'rack-ssl'
-end
+gem 'yard-sinatra',   github: 'rkh/yard-sinatra'
 
 group :test do
   gem 'rspec',        '~> 2.11'
@@ -23,7 +14,6 @@ group :test do
 end
 
 group :development do
-  gem 'yard-sinatra', github: 'rkh/yard-sinatra'
   gem 'foreman'
   gem 'rerun'
 end
diff --git a/Gemfile.lock b/Gemfile.lock
index 7870e3d9..745c9fbc 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -45,6 +45,22 @@ GIT
   specs:
     travis-support (0.0.1)
 
+PATH
+  remote: .
+  specs:
+    travis-api (0.0.1)
+      backports (~> 2.5)
+      hubble (~> 0.1)
+      newrelic_rpm (~> 3.3.0)
+      pg (~> 0.13.2)
+      rack-ssl (~> 1.3)
+      redcarpet (~> 2.1)
+      sinatra (~> 1.3)
+      sinatra-contrib (~> 1.3)
+      thin (~> 1.4)
+      travis-core
+      travis-support
+
 GEM
   remote: http://rubygems.org/
   specs:
@@ -207,21 +223,14 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
-  backports (~> 2.5)
   factory_girl (~> 2.4.0)
   foreman
   hubble!
   micro_migrations!
-  newrelic_rpm (~> 3.3.0)
-  pg (~> 0.13.2)
-  rack-ssl
   rake (~> 0.9.2)
-  redcarpet
   rerun
   rspec (~> 2.11)
-  sinatra
-  sinatra-contrib
-  thin (~> 1.4)
+  travis-api!
   travis-core!
   travis-support!
   yard-sinatra!
diff --git a/Rakefile b/Rakefile
index 60a72d37..5c5bce13 100644
--- a/Rakefile
+++ b/Rakefile
@@ -11,3 +11,25 @@ begin
 rescue LoadError
   warn "could not load rspec"
 end
+
+desc "generate gemspec"
+task 'travis-api.gemspec' do
+  content = File.read 'travis-api.gemspec'
+
+  fields = {
+    authors: `git shortlog -sn`.scan(/[^\d\s].*/),
+    email:   `git shortlog -sne`.scan(/[^<]+@[^>]+/),
+    files:   `git ls-files`.split("\n").reject { |f| f =~ /^(\.|Gemfile)/ }
+  }
+
+  fields.each do |field, values|
+    updated = "  s.#{field} = ["
+    updated << values.map { |v| "\n    %p" % v }.join(',')
+    updated << "\n  ]"
+    content.sub!(/  s\.#{field} = \[\n(    .*\n)*  \]/, updated)
+  end
+
+  File.open('travis-api.gemspec', 'w') { |f| f << content }
+end
+
+task default: 'travis-api.gemspec'
diff --git a/travis-api.gemspec b/travis-api.gemspec
index df9c7c12..76792ae9 100644
--- a/travis-api.gemspec
+++ b/travis-api.gemspec
@@ -1,8 +1,92 @@
 # encoding: utf-8
 
 Gem::Specification.new do |s|
+  s.description  = 'The Travis API'
+  s.summary      = 'Code running on http://api.travis-ci.org'
   s.name         = 'travis-api'
+  s.homepage     = 'http://api.travis-ci.org'
   s.version      = '0.0.1'
   s.require_path = 'lib'
+
+  s.authors = [
+    "Konstantin Haase",
+    "Sven Fuchs",
+    "Piotr Sarnacki"
+  ]
+
+  s.email = [
+    "konstantin.mailinglists@googlemail.com",
+    "svenfuchs@artweb-design.de",
+    "drogus@gmail.com"
+  ]
+
+  s.files = [
+    "Procfile",
+    "README.md",
+    "Rakefile",
+    "config.ru",
+    "lib/travis/api/app.rb",
+    "lib/travis/api/app/access_token.rb",
+    "lib/travis/api/app/endpoint.rb",
+    "lib/travis/api/app/endpoint/artifacts.rb",
+    "lib/travis/api/app/endpoint/authorization.rb",
+    "lib/travis/api/app/endpoint/branches.rb",
+    "lib/travis/api/app/endpoint/builds.rb",
+    "lib/travis/api/app/endpoint/documentation.rb",
+    "lib/travis/api/app/endpoint/endpoints.rb",
+    "lib/travis/api/app/endpoint/home.rb",
+    "lib/travis/api/app/endpoint/hooks.rb",
+    "lib/travis/api/app/endpoint/jobs.rb",
+    "lib/travis/api/app/endpoint/profile.rb",
+    "lib/travis/api/app/endpoint/repositories.rb",
+    "lib/travis/api/app/endpoint/workers.rb",
+    "lib/travis/api/app/extensions.rb",
+    "lib/travis/api/app/extensions/smart_constants.rb",
+    "lib/travis/api/app/extensions/subclass_tracker.rb",
+    "lib/travis/api/app/helpers.rb",
+    "lib/travis/api/app/helpers/json_renderer.rb",
+    "lib/travis/api/app/middleware.rb",
+    "lib/travis/api/app/middleware/access_token.rb",
+    "lib/travis/api/app/middleware/cors.rb",
+    "lib/travis/api/app/middleware/logging.rb",
+    "lib/travis/api/app/responder.rb",
+    "script/server",
+    "spec/app_spec.rb",
+    "spec/default_spec.rb",
+    "spec/endpoint/artifacts_spec.rb",
+    "spec/endpoint/branches_spec.rb",
+    "spec/endpoint/builds_spec.rb",
+    "spec/endpoint/documentation_spec.rb",
+    "spec/endpoint/endpoints_spec.rb",
+    "spec/endpoint/hooks_spec.rb",
+    "spec/endpoint/jobs_spec.rb",
+    "spec/endpoint/profile_spec.rb",
+    "spec/endpoint/repositories_spec.rb",
+    "spec/endpoint/workers_spec.rb",
+    "spec/endpoint_spec.rb",
+    "spec/extensions/smart_constants_spec.rb",
+    "spec/extensions/subclass_tracker_spec.rb",
+    "spec/helpers/json_renderer_spec.rb",
+    "spec/middleware/access_token_spec.rb",
+    "spec/middleware/cors_spec.rb",
+    "spec/middleware/logging_spec.rb",
+    "spec/middleware_spec.rb",
+    "spec/spec_helper.rb",
+    "spec/support/factories.rb",
+    "travis-api.gemspec"
+  ]
+
+  s.add_dependency 'travis-support'
+  s.add_dependency 'travis-core'
+
+  s.add_dependency 'hubble',          '~> 0.1'
+  s.add_dependency 'backports',       '~> 2.5'
+  s.add_dependency 'pg',              '~> 0.13.2'
+  s.add_dependency 'newrelic_rpm',    '~> 3.3.0'
+  s.add_dependency 'thin',            '~> 1.4'
+  s.add_dependency 'sinatra',         '~> 1.3'
+  s.add_dependency 'sinatra-contrib', '~> 1.3'
+  s.add_dependency 'redcarpet',       '~> 2.1'
+  s.add_dependency 'rack-ssl',        '~> 1.3'
 end