diff --git a/Gemfile b/Gemfile
index e6f772a..2984b74 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@ source 'https://rubygems.org'
 gemspec
 
 group :test do
-  gem 'simplecov', '~>0.9.0', :require => false
+  gem 'simplecov', '~>0.17.1', :require => false
   gem 'webmock', '~>1.18.0'
   gem 'safe_yaml', '~>1.0.4'
   gem 'vcr', '~>2.9.0'