.rubocop.yml in ridgepole-1.0.0 vs .rubocop.yml in ridgepole-1.0.1

@@ -1,10 +1,10 @@
 AllCops:
   Exclude:
     - "gemfiles/**/*"
     - "omnibus-ridgepole/**/*"
     - "vendor/bundle/**/*"
-  TargetRubyVersion: 2.4
+  TargetRubyVersion: 2.5
   NewCops: enable
 Bundler/OrderedGems:
   Include:
     - "Appraisals"
 Layout/HeredocIndentation: