diff --git a/sendgrid-ruby.gemspec b/sendgrid-ruby.gemspec
index 340b8c55..bf6ba958 100644
--- a/sendgrid-ruby.gemspec
+++ b/sendgrid-ruby.gemspec
@@ -28,4 +28,5 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'rubocop'
   spec.add_development_dependency 'minitest', '~> 5.9'
   spec.add_development_dependency 'rack'
+  spec.add_development_dependency 'simplecov'
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 5d4fe61b..f1c10fd9 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,3 +1,5 @@
+require 'simplecov'
+SimpleCov.start
 require 'rubygems'
 require 'bundler/setup'
 require 'pry'
diff --git a/test/sendgrid/test_sendgrid-ruby.rb b/test/sendgrid/test_sendgrid-ruby.rb
index 2146a4bd..4c4ede5a 100644
--- a/test/sendgrid/test_sendgrid-ruby.rb
+++ b/test/sendgrid/test_sendgrid-ruby.rb
@@ -1,3 +1,5 @@
+require 'simplecov'
+SimpleCov.start
 require_relative '../../lib/sendgrid-ruby.rb'
 require 'ruby_http_client'
 require 'minitest/autorun'