diff --git a/json-streamer.gemspec b/json-streamer.gemspec
index 247fbd9..893d87a 100644
--- a/json-streamer.gemspec
+++ b/json-streamer.gemspec
@@ -24,6 +24,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "bundler", "~> 1.14"
   spec.add_development_dependency "rake", "~> 10.0"
   spec.add_development_dependency "rspec", "~> 3.0"
+  spec.add_development_dependency "coveralls"
   spec.add_development_dependency "ndhash"
 
   spec.add_dependency "json-stream"
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 95095a2..0347739 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,6 +1,9 @@
 require 'bundler/setup'
 Bundler.setup
 
+require 'coveralls'
+Coveralls.wear!
+
 require 'stringio'
 require 'json'
 require 'ndhash'