.rubocop.yml in active_validation-4.0.8 vs .rubocop.yml in active_validation-4.0.9

@@ -1,8 +1,8 @@
 AllCops:
   DisplayCopNames: true
   DisplayStyleGuide: true
-  TargetRubyVersion: 2.3
+  TargetRubyVersion: 2.4
   Exclude:
     - 'spec/**/**/*'
 Layout/ClosingParenthesisIndentation:
   Enabled: false
 Layout/EmptyLinesAroundBlockBody: