diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6a26232..e0f1587 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.6
+          ruby-version: 3.3
           bundler-cache: true
       - name: rubocop with skip install and using bundler
         uses: ./
@@ -20,7 +20,7 @@ jobs:
           github_token: ${{ secrets.github_token }}
           skip_install: 'true'
           use_bundler: 'true'
-      - run: test "$(bundle exec rubocop --version)" == "1.18.1"
+      - run: test "$(bundle exec rubocop --version)" == "1.65.0"
   test-only_changed:
     runs-on: ubuntu-latest
     defaults:
diff --git a/.rubocop.yml b/.rubocop.yml
index 2e515ce..b4afcae 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -2,3 +2,211 @@ AllCops:
   Exclude:
     - 'test/rdjson_formatter/**/*'
     - 'vendor/**/*'
+Gemspec/AddRuntimeDependency: # new in 1.65
+  Enabled: true
+Gemspec/DeprecatedAttributeAssignment: # new in 1.30
+  Enabled: true
+Gemspec/DevelopmentDependencies: # new in 1.44
+  Enabled: true
+Gemspec/RequireMFA: # new in 1.23
+  Enabled: true
+Layout/LineContinuationLeadingSpace: # new in 1.31
+  Enabled: true
+Layout/LineContinuationSpacing: # new in 1.31
+  Enabled: true
+Layout/LineEndStringConcatenationIndentation: # new in 1.18
+  Enabled: true
+Layout/SpaceBeforeBrackets: # new in 1.7
+  Enabled: true
+Lint/AmbiguousAssignment: # new in 1.7
+  Enabled: true
+Lint/AmbiguousOperatorPrecedence: # new in 1.21
+  Enabled: true
+Lint/AmbiguousRange: # new in 1.19
+  Enabled: true
+Lint/ConstantOverwrittenInRescue: # new in 1.31
+  Enabled: true
+Lint/DeprecatedConstants: # new in 1.8
+  Enabled: true
+Lint/DuplicateBranch: # new in 1.3
+  Enabled: true
+Lint/DuplicateMagicComment: # new in 1.37
+  Enabled: true
+Lint/DuplicateMatchPattern: # new in 1.50
+  Enabled: true
+Lint/DuplicateRegexpCharacterClassElement: # new in 1.1
+  Enabled: true
+Lint/EmptyBlock: # new in 1.1
+  Enabled: true
+Lint/EmptyClass: # new in 1.3
+  Enabled: true
+Lint/EmptyInPattern: # new in 1.16
+  Enabled: true
+Lint/IncompatibleIoSelectWithFiberScheduler: # new in 1.21
+  Enabled: true
+Lint/ItWithoutArgumentsInBlock: # new in 1.59
+  Enabled: true
+Lint/LambdaWithoutLiteralBlock: # new in 1.8
+  Enabled: true
+Lint/LiteralAssignmentInCondition: # new in 1.58
+  Enabled: true
+Lint/MixedCaseRange: # new in 1.53
+  Enabled: true
+Style/NumberedParameters: # new in 1.22
+  Enabled: true
+Style/NumberedParametersLimit: # new in 1.22
+  Enabled: true
+Style/ObjectThen: # new in 1.28
+  Enabled: true
+Style/OpenStructUse: # new in 1.23
+  Enabled: true
+Style/OperatorMethodCall: # new in 1.37
+  Enabled: true
+Style/QuotedSymbols: # new in 1.16
+  Enabled: true
+Style/RedundantArgument: # new in 1.4
+  Enabled: true
+Style/RedundantArrayConstructor: # new in 1.52
+  Enabled: true
+Style/RedundantConstantBase: # new in 1.40
+  Enabled: true
+Style/RedundantCurrentDirectoryInPath: # new in 1.53
+  Enabled: true
+Style/RedundantDoubleSplatHashBraces: # new in 1.41
+  Enabled: true
+Style/RedundantEach: # new in 1.38
+  Enabled: true
+Style/RedundantFilterChain: # new in 1.52
+  Enabled: true
+Style/RedundantHeredocDelimiterQuotes: # new in 1.45
+  Enabled: true
+Style/RedundantInitialize: # new in 1.27
+  Enabled: true
+Style/RedundantLineContinuation: # new in 1.49
+  Enabled: true
+Style/RedundantRegexpArgument: # new in 1.53
+  Enabled: true
+Style/RedundantRegexpConstructor: # new in 1.52
+  Enabled: true
+Style/RedundantSelfAssignmentBranch: # new in 1.19
+  Enabled: true
+Style/RedundantStringEscape: # new in 1.37
+  Enabled: true
+Style/ReturnNilInPredicateMethodDefinition: # new in 1.53
+  Enabled: true
+Style/SelectByRegexp: # new in 1.22
+  Enabled: true
+Style/SendWithLiteralMethodName: # new in 1.64
+  Enabled: true
+Style/SingleLineDoEndBlock: # new in 1.57
+  Enabled: true
+Style/StringChars: # new in 1.12
+  Enabled: true
+Style/SuperArguments: # new in 1.64
+  Enabled: true
+Style/SuperWithArgsParentheses: # new in 1.58
+  Enabled: true
+Style/SwapValues: # new in 1.1
+  Enabled: true
+Style/YAMLFileRead: # new in 1.53
+  Enabled: true
+Lint/NoReturnInBeginEndBlocks: # new in 1.2
+  Enabled: true
+Lint/NonAtomicFileOperation: # new in 1.31
+  Enabled: true
+Lint/NumberedParameterAssignment: # new in 1.9
+  Enabled: true
+Lint/OrAssignmentToConstant: # new in 1.9
+  Enabled: true
+Lint/RedundantDirGlobSort: # new in 1.8
+  Enabled: true
+Lint/RedundantRegexpQuantifiers: # new in 1.53
+  Enabled: true
+Lint/RefinementImportMethods: # new in 1.27
+  Enabled: true
+Lint/RequireRangeParentheses: # new in 1.32
+  Enabled: true
+Lint/RequireRelativeSelfPath: # new in 1.22
+  Enabled: true
+Lint/SymbolConversion: # new in 1.9
+  Enabled: true
+Lint/ToEnumArguments: # new in 1.1
+  Enabled: true
+Lint/TripleQuotes: # new in 1.9
+  Enabled: true
+Lint/UnexpectedBlockArity: # new in 1.5
+  Enabled: true
+Lint/UnmodifiedReduceAccumulator: # new in 1.1
+  Enabled: true
+Lint/UselessRescue: # new in 1.43
+  Enabled: true
+Lint/UselessRuby2Keywords: # new in 1.23
+  Enabled: true
+Metrics/CollectionLiteralLength: # new in 1.47
+  Enabled: true
+Naming/BlockForwarding: # new in 1.24
+  Enabled: true
+Security/CompoundHash: # new in 1.28
+  Enabled: true
+Security/IoMethods: # new in 1.22
+  Enabled: true
+Style/ArgumentsForwarding: # new in 1.1
+  Enabled: true
+Style/ArrayIntersect: # new in 1.40
+  Enabled: true
+Style/CollectionCompact: # new in 1.2
+  Enabled: true
+Style/ComparableClamp: # new in 1.44
+  Enabled: true
+Style/ConcatArrayLiterals: # new in 1.41
+  Enabled: true
+Style/DataInheritance: # new in 1.49
+  Enabled: true
+Style/DirEmpty: # new in 1.48
+  Enabled: true
+Style/DocumentDynamicEvalDefinition: # new in 1.1
+  Enabled: true
+Style/EmptyHeredoc: # new in 1.32
+  Enabled: true
+Style/EndlessMethod: # new in 1.8
+  Enabled: true
+Style/EnvHome: # new in 1.29
+  Enabled: true
+Style/ExactRegexpMatch: # new in 1.51
+  Enabled: true
+Style/FetchEnvVar: # new in 1.28
+  Enabled: true
+Style/FileEmpty: # new in 1.48
+  Enabled: true
+Style/FileRead: # new in 1.24
+  Enabled: true
+Style/FileWrite: # new in 1.24
+  Enabled: true
+Style/HashConversion: # new in 1.10
+  Enabled: true
+Style/HashExcept: # new in 1.7
+  Enabled: true
+Style/IfWithBooleanLiteralBranches: # new in 1.9
+  Enabled: true
+Style/InPatternThen: # new in 1.16
+  Enabled: true
+Style/MagicCommentFormat: # new in 1.35
+  Enabled: true
+Style/MapCompactWithConditionalBlock: # new in 1.30
+  Enabled: true
+Style/MapIntoArray: # new in 1.63
+  Enabled: true
+Style/MapToHash: # new in 1.24
+  Enabled: true
+Style/MapToSet: # new in 1.42
+  Enabled: true
+Style/MinMaxComparison: # new in 1.42
+  Enabled: true
+Style/MultilineInPatternThen: # new in 1.16
+  Enabled: true
+Style/NegatedIfElseCondition: # new in 1.2
+  Enabled: true
+Style/NestedFileDirname: # new in 1.26
+  Enabled: true
+Style/NilLambda: # new in 1.3
+  Enabled: true
diff --git a/test/using_bundler/Gemfile.lock b/test/using_bundler/Gemfile.lock
index 1692780..802cd8b 100644
--- a/test/using_bundler/Gemfile.lock
+++ b/test/using_bundler/Gemfile.lock
@@ -2,27 +2,33 @@ GEM
   remote: https://rubygems.org/
   specs:
     ast (2.4.2)
-    parallel (1.20.1)
-    parser (3.0.2.0)
+    json (2.7.2)
+    language_server-protocol (3.17.0.3)
+    parallel (1.25.1)
+    parser (3.3.4.0)
       ast (~> 2.4.1)
-    rainbow (3.0.0)
-    regexp_parser (2.1.1)
-    rexml (3.2.8)
-      strscan (>= 3.0.9)
-    rubocop (1.18.1)
+      racc
+    racc (1.8.0)
+    rainbow (3.1.1)
+    regexp_parser (2.9.2)
+    rexml (3.3.2)
+      strscan
+    rubocop (1.65.0)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
       parallel (~> 1.10)
-      parser (>= 3.0.0.0)
+      parser (>= 3.3.0.2)
       rainbow (>= 2.2.2, < 4.0)
-      regexp_parser (>= 1.8, < 3.0)
-      rexml
-      rubocop-ast (>= 1.7.0, < 2.0)
+      regexp_parser (>= 2.4, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.31.1, < 2.0)
       ruby-progressbar (~> 1.7)
-      unicode-display_width (>= 1.4.0, < 3.0)
-    rubocop-ast (1.9.0)
-      parser (>= 3.0.1.1)
-    ruby-progressbar (1.11.0)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.31.3)
+      parser (>= 3.3.1.0)
+    ruby-progressbar (1.13.0)
     strscan (3.1.0)
-    unicode-display_width (2.0.0)
+    unicode-display_width (2.5.0)
 
 PLATFORMS
   x86_64-linux
@@ -31,4 +37,4 @@ DEPENDENCIES
   rubocop
 
 BUNDLED WITH
-   2.2.25
+   2.5.11