diff --git a/Gemfile b/Gemfile
index d89356ec..533a66a4 100644
--- a/Gemfile
+++ b/Gemfile
@@ -12,7 +12,7 @@ group :development, :test do
   gem "rspec", "~> 3.13.0"
   gem "standard"
   gem "standard-performance"
-  gem "simplecov", "~> 0.22.0"
+  gem "simplecov", "~> 1.0.0"
   gem "simplecov-cobertura", "~> 3.0"
   gem "steep", "~> 2.0"
   gem "timecop", "~> 0.9.10"