diff --git a/Gemfile b/Gemfile
index e81af46..cb1d6c4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -33,7 +33,7 @@ group :development, :test do
   gem "standard", "~> 1.54", require: false
 
   # Coverage
-  gem "simplecov", "~> 0.22", require: false
+  gem "simplecov", "~> 1.0", require: false
 
   # Database (test)
   gem "sqlite3", "~> 2.9"