diff --git a/Gemfile b/Gemfile
index 1ebde10..dbe7645 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,7 +13,7 @@ end
 
 gem "minitest", "~> 5.0"
 gem "rake", "~> 13.0"
-gem "standard"
+gem "rubocop"
 gem "rubocop-performance"
 gem "rubocop-thread_safety"