diff --git a/Gemfile b/Gemfile
index 564b2c7..5678fc0 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ gem "rubocop"
 gem "rubocop-minitest"
 gem "rubocop-performance"
 
-gem 'simplecov', '~> 0.17.1'
+gem 'simplecov', '~> 0.18.5'
 
 gem "minitest"
 gem "minitest-reporters"