diff --git a/Gemfile b/Gemfile
index 55cff0e6..d61b55b1 100644
--- a/Gemfile
+++ b/Gemfile
@@ -10,6 +10,7 @@ group :development do
   gem 'growl'
   gem 'guard-rspec'
   gem 'coveralls', require: false
+  gem 'simplecov', require: false
 
   gem 'pry'
   # osx
diff --git a/spec/coveralls-setup.rb b/spec/coveralls-setup.rb
index 54a6989c..55d872b8 100644
--- a/spec/coveralls-setup.rb
+++ b/spec/coveralls-setup.rb
@@ -1,2 +1,12 @@
+require 'simplecov'
 require 'coveralls'
-Coveralls.wear!
+
+SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter[
+  SimpleCov::Formatter::HTMLFormatter,
+  Coveralls::SimpleCov::Formatter
+]
+
+SimpleCov.start do
+  add_filter 'spec/'
+end
+