diff --git a/google-api-client.gemspec b/google-api-client.gemspec
index d95a08260..6764697f4 100644
--- a/google-api-client.gemspec
+++ b/google-api-client.gemspec
@@ -38,5 +38,6 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'yard', '~> 0.8'
   s.add_development_dependency 'rspec', '~> 3.1'
   s.add_development_dependency 'kramdown', '~> 1.5'
-  s.add_development_dependency 'simplecov', '~> 0.9'
+  s.add_development_dependency 'simplecov', '~> 0.9.2'
+  s.add_development_dependency 'coveralls', '~> 0.7.11'
 end
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 902276c14..1c64a4e8c 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -6,7 +6,9 @@ require 'faraday'
 
 begin
   require 'simplecov'
+  require 'coveralls'
 
+  SimpleCov.formatter = Coveralls::SimpleCov::Formatter
   SimpleCov.start
 rescue LoadError
   # SimpleCov missing, so just run specs with no coverage.