diff --git a/Gemfile b/Gemfile
index 45734295cb..4500d904ac 100644
--- a/Gemfile
+++ b/Gemfile
@@ -22,7 +22,7 @@ group :development, :test do
     gem "yard"
     gem "redcarpet"
     gem "pry-byebug"
-    gem "rubocop", "~> 1.8.1", require: false
+    gem "rubocop", "~> 1.9.0", require: false
     gem "listen"
     gem "localeapp", "~> 3.0", require: false
     gem "dotenv", "~> 2.2"