diff --git a/Rakefile b/Rakefile
index 5652568..344bbea 100644
--- a/Rakefile
+++ b/Rakefile
@@ -4,16 +4,16 @@ Bundler::GemHelper.install_tasks
 require 'rspec/core/rake_task'
 RSpec::Core::RakeTask.new(:spec)
 
-namespace :cover_me do
-  desc "Generates and opens code coverage report."
+namespace :coverage do
+  desc "Open coverage report"
   task :report do
-    require 'cover_me'
-    CoverMe.complete!
+    require 'simplecov'
+    `open "#{File.join SimpleCov.coverage_path, 'index.html'}"`
   end
 end
 
 task :spec do
-  Rake::Task['cover_me:report'].invoke unless ENV['TRAVIS_RUBY_VERSION']
+  Rake::Task[:'coverage:report'].invoke unless ENV['TRAVIS_RUBY_VERSION']
 end
 
-task default: :spec
\ No newline at end of file
+task :default => :spec
\ No newline at end of file
diff --git a/openid_connect.gemspec b/openid_connect.gemspec
index f824aa2..d94e8cc 100644
--- a/openid_connect.gemspec
+++ b/openid_connect.gemspec
@@ -25,5 +25,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency "rake", ">= 0.8"
   s.add_development_dependency "rspec", ">= 2"
   s.add_development_dependency "webmock", ">= 1.6.2"
-  s.add_development_dependency "cover_me", ">= 1.2.0"
+  s.add_development_dependency "simplecov"
 end
\ No newline at end of file
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 52610a2..b2877b3 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -1,4 +1,8 @@
-require 'cover_me'
+require 'simplecov'
+
+SimpleCov.start do
+  add_filter 'spec'
+end
 
 require 'rspec'
 require 'openid_connect'