diff --git a/analytics-ruby.gemspec b/analytics-ruby.gemspec
index 0fc6467..ff9636f 100644
--- a/analytics-ruby.gemspec
+++ b/analytics-ruby.gemspec
@@ -26,4 +26,6 @@ Gem::Specification.new do |spec|
   if RUBY_VERSION >= "2.1"
     spec.add_development_dependency 'rubocop', '~> 0.51.0'
   end
+
+  spec.add_development_dependency 'codecov', '~> 0.1.4'
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 33cf320..8d8bdb8 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,9 @@
+# https://github.com/codecov/codecov-ruby#usage
+require 'simplecov'
+SimpleCov.start
+require 'codecov'
+SimpleCov.formatter = SimpleCov::Formatter::Codecov
+
 require 'segment/analytics'
 require 'active_support/time'