diff --git a/.rubocop.yml b/.rubocop.yml
index 3a4bc62..adcab6a 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,8 +1,7 @@
 require: rubocop-performance
 
-# -- main --
-
 AllCops:
+  NewCops: enable
   TargetRubyVersion: 2.5
 
 Layout/EmptyLinesAroundExceptionHandlingKeywords:
@@ -62,123 +61,3 @@ Style/StringLiterals:
   EnforcedStyle: double_quotes
 Style/YodaCondition:
   Enabled: false
-
-# -- others --
-
-Layout/BeginEndAlignment:
-  Enabled: true
-Layout/EmptyLinesAroundAttributeAccessor:
-  Enabled: true
-Layout/SpaceAroundMethodCallOperator:
-  Enabled: true
-
-Lint/BinaryOperatorWithIdenticalOperands:
-  Enabled: true
-Lint/ConstantDefinitionInBlock:
-  Enabled: true
-Lint/DeprecatedOpenSSLConstant:
-  Enabled: true
-Lint/DuplicateElsifCondition:
-  Enabled: true
-Lint/DuplicateRequire:
-  Enabled: true
-Lint/DuplicateRescueException:
-  Enabled: true
-Lint/EmptyConditionalBody:
-  Enabled: true
-Lint/EmptyFile:
-  Enabled: true
-Lint/FloatComparison:
-  Enabled: true
-Lint/IdentityComparison:
-  Enabled: true
-Lint/MissingSuper:
-  Enabled: true
-Lint/MixedRegexpCaptureTypes:
-  Enabled: true
-Lint/OutOfRangeRegexpRef:
-  Enabled: true
-Lint/RaiseException:
-  Enabled: true
-Lint/SelfAssignment:
-  Enabled: true
-Lint/StructNewOverride:
-  Enabled: true
-Lint/TopLevelReturnWithArgument:
-  Enabled: true
-Lint/TrailingCommaInAttributeDeclaration:
-  Enabled: true
-Lint/UnreachableLoop:
-  Enabled: true
-Lint/UselessMethodDefinition:
-  Enabled: true
-Lint/UselessTimes:
-  Enabled: true
-
-Style/ArrayCoercion:
-  Enabled: true
-Style/BisectedAttrAccessor:
-  Enabled: true
-Style/CaseLikeIf:
-  Enabled: true
-Style/CombinableLoops:
-  Enabled: true
-Style/ExplicitBlockArgument:
-  Enabled: true
-Style/ExponentialNotation:
-  Enabled: true
-Style/GlobalStdStream:
-  Enabled: true
-Style/HashAsLastArrayItem:
-  Enabled: true
-Style/HashEachMethods:
-  Enabled: true
-Style/HashLikeCase:
-  Enabled: true
-Style/HashTransformKeys:
-  Enabled: true
-Style/HashTransformValues:
-  Enabled: true
-Style/KeywordParametersOrder:
-  Enabled: true
-Style/OptionalBooleanParameter:
-  Enabled: true
-Style/RedundantAssignment:
-  Enabled: true
-Style/RedundantFetchBlock:
-  Enabled: true
-Style/RedundantFileExtensionInRequire:
-  Enabled: true
-Style/RedundantRegexpCharacterClass:
-  Enabled: true
-Style/RedundantRegexpEscape:
-  Enabled: true
-Style/RedundantSelfAssignment:
-  Enabled: true
-Style/SingleArgumentDig:
-  Enabled: true
-Style/SlicingWithRange:
-  Enabled: true
-Style/SoleNestedConditional:
-  Enabled: true
-Style/StringConcatenation:
-  Enabled: true
-
-Performance/AncestorsInclude:
-  Enabled: true
-Performance/BigDecimalWithNumericArgument:
-  Enabled: true
-Performance/RedundantSortBlock:
-  Enabled: true
-Performance/RedundantStringChars:
-  Enabled: true
-Performance/ReverseFirst:
-  Enabled: true
-Performance/SortReverse:
-  Enabled: true
-Performance/Squeeze:
-  Enabled: true
-Performance/StringInclude:
-  Enabled: true
-Performance/Sum:
-  Enabled: true