.rubocop.yml in undercover-0.3.3 vs .rubocop.yml in undercover-0.3.4

@@ -1,7 +1,7 @@
 AllCops:
-  TargetRubyVersion: 2.4.4
+  TargetRubyVersion: 2.7.0
   Exclude:
     - spec/fixtures/**/*
 
 Style/RegexpLiteral:
   EnforcedStyle: slashes
@@ -19,5 +19,14 @@
 
 Metrics/BlockLength:
   Enabled: true
   Exclude:
     - spec/**/*
+
+Style/HashEachMethods:
+  Enabled: true
+
+Style/HashTransformKeys:
+  Enabled: true
+
+Style/HashTransformValues:
+  Enabled: true