diff --git a/.travis.yml b/.travis.yml
index f7a40167..5e7d8cc3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,4 +5,6 @@ rvm:
   - 1.9.3
   - 1.9.2
   - rbx
-script: "rake spec"
+script: bundle exec rake spec
+cache: bundler
+bundler_args: --without cucumber
diff --git a/Gemfile b/Gemfile
index d9493f9f..8b274d5d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,3 +2,12 @@ source 'https://rubygems.org'
 
 # Specify your gem's dependencies in capistrano.gemspec
 gemspec
+
+group :cucumber do
+  gem 'kuroko'
+  gem 'cucumber'
+end
+
+platforms :rbx do
+  gem 'rubysl', '~> 2.0'
+end
diff --git a/capistrano.gemspec b/capistrano.gemspec
index 09e487b2..4558e1d4 100644
--- a/capistrano.gemspec
+++ b/capistrano.gemspec
@@ -31,7 +31,4 @@ eos
 
   gem.add_development_dependency 'rspec'
   gem.add_development_dependency 'mocha'
-  gem.add_development_dependency 'kuroko'
-  gem.add_development_dependency 'cucumber'
-
 end