diff --git a/.travis.yml b/.travis.yml
index d7579c64..810c85f2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,4 @@
 # https://github.com/travis-ci/travis-ci/wiki/.travis.yml-options
-bundler_args: --without developer_happiness
 script: "bundle exec rake"
 rvm:
   - 1.8.7
diff --git a/Gemfile b/Gemfile
index 648676a7..e569af79 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,8 +2,3 @@ source :rubygems
 gemspec
 
 gem "httpclient", "~> 2.1.5"
-
-# excluded from travis
-group :developer_happiness do
-  gem "autotest"
-end
diff --git a/savon.gemspec b/savon.gemspec
index b9351af1..10b6f9d1 100644
--- a/savon.gemspec
+++ b/savon.gemspec
@@ -27,6 +27,9 @@ Gem::Specification.new do |s|
   s.add_development_dependency "mocha",   "~> 0.9.8"
   s.add_development_dependency "timecop", "~> 0.3.5"
 
+  s.add_development_dependency "autotest"
+  s.add_development_dependency "ZenTest", "4.5.0"
+
   s.files = `git ls-files`.split("\n")
   s.require_path = "lib"
 end