.rubocop.yml in avromatic-2.4.0 vs .rubocop.yml in avromatic-3.0.0

@@ -1,9 +1,9 @@
 inherit_gem:
   salsify_rubocop: conf/rubocop.yml
 
 AllCops:
-  TargetRubyVersion: 2.4
+  TargetRubyVersion: 2.5
   Exclude:
     - 'vendor/**/*'
     - 'gemfiles/vendor/**/*'
 
 Style/MultilineBlockChain: