diff --git a/.github/workflows/release-rubygem.yml b/.github/workflows/release-rubygem.yml
index b12f9bffd..0314b2b2d 100644
--- a/.github/workflows/release-rubygem.yml
+++ b/.github/workflows/release-rubygem.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.0.2'
+          ruby-version: '3.2'
           bundler-cache: true
       - uses: cucumber/action-publish-rubygem@v1.0.0
         with:
diff --git a/.github/workflows/test-ruby.yml b/.github/workflows/test-ruby.yml
index 864351c34..f89f37369 100644
--- a/.github/workflows/test-ruby.yml
+++ b/.github/workflows/test-ruby.yml
@@ -17,21 +17,20 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-        ruby: ['2.7', '3.0']
+        ruby: ['2.7', '3.0', '3.1', '3.2']
         include:
           - os: windows-latest
-            ruby: '3.0'
+            ruby: '3.2'
           - os: macos-latest
-            ruby: '3.0'
+            ruby: '3.2'
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up Ruby
-      uses: ruby/setup-ruby@v1
+    - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}
         bundler-cache: true
         working-directory: ruby
-    - name: bundle exec rspec
+    - name: rspec
       working-directory: ruby
       run: bundle exec rspec
diff --git a/CHANGELOG.md b/CHANGELOG.md
index e49dc8456..b71c5488c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [Unreleased]
+### Changed
+- [Ruby] Minimum supported ruby is now 2.5+
 
 - [JavaScript] Added TypeScript source to the package ([#211](https://github.com/cucumber/cucumber-expressions/pull/211))
 
diff --git a/ruby/.gitignore b/ruby/.gitignore
index 2d16bb2af..d2c474cc6 100644
--- a/ruby/.gitignore
+++ b/ruby/.gitignore
@@ -3,8 +3,5 @@ coverage/
 acceptance/
 pkg/
 *.gem
-.compared
 .deps
-.tested*
-*-go
 *.iml
diff --git a/ruby/.rspec b/ruby/.rspec
deleted file mode 100644
index 4e1e0d2f7..000000000
--- a/ruby/.rspec
+++ /dev/null
@@ -1 +0,0 @@
---color
diff --git a/ruby/.rubocop.yml b/ruby/.rubocop.yml
new file mode 100644
index 000000000..835d9835d
--- /dev/null
+++ b/ruby/.rubocop.yml
@@ -0,0 +1,27 @@
+inherit_from: .rubocop_todo.yml
+
+inherit_mode:
+  merge:
+    - Exclude
+
+AllCops:
+  TargetRubyVersion: 2.5
+  NewCops: enable
+
+# Disabled on our repo's to enable polyglot-release
+Gemspec/RequireMFA:
+  Enabled: false
+
+Layout/LineLength:
+  Max: 200
+
+Style/Documentation:
+  Enabled: false
+
+Style/RegexpLiteral:
+  EnforcedStyle: slashes
+  AllowInnerSlashes: true
+
+# Once we enable rubocop-rspec
+#RSpec/MessageSpies:
+#  EnforcedStyle: receive
diff --git a/ruby/.rubocop_todo.yml b/ruby/.rubocop_todo.yml
new file mode 100644
index 000000000..c41ac704f
--- /dev/null
+++ b/ruby/.rubocop_todo.yml
@@ -0,0 +1,774 @@
+# This configuration was generated by
+# `rubocop --auto-gen-config`
+# on 2023-10-03 16:26:01 UTC using RuboCop version 1.27.0.
+# The point is for the user to remove these configuration records
+# one by one as the offenses are removed from the code base.
+# Note that changes in the inspected code, or installation of new
+# versions of RuboCop, may require this file to be generated again.
+
+# TODO: Oct '23 -> 33 files inspected, 1004 offenses detected, 859 offenses auto-correctable
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: outdent, indent
+Layout/AccessModifierIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_generator.rb'
+
+# Offense count: 45
+# This cop supports safe auto-correction (--auto-correct).
+Layout/ClosingParenthesisIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/argument.rb'
+    - 'lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/regular_expression_spec.rb'
+
+# Offense count: 25
+# This cop supports safe auto-correction (--auto-correct).
+Layout/EmptyLineAfterGuardClause:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/argument.rb'
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+    - 'lib/cucumber/cucumber_expressions/tree_regexp.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/regular_expression_spec.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+Layout/EmptyLineAfterMagicComment:
+  Exclude:
+    - 'Gemfile'
+    - 'Rakefile'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EmptyLineBetweenMethodDefs, EmptyLineBetweenClassDefs, EmptyLineBetweenModuleDefs, AllowAdjacentOneLineDefs, NumberOfEmptyLines.
+Layout/EmptyLineBetweenDefs:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 3
+# This cop supports safe auto-correction (--auto-correct).
+Layout/EmptyLines:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, no_empty_lines
+Layout/EmptyLinesAroundBlockBody:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/tree_regexp_spec.rb'
+
+# Offense count: 4
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines, beginning_only, ending_only
+Layout/EmptyLinesAroundClassBody:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+    - 'lib/cucumber/cucumber_expressions/regular_expression.rb'
+
+# Offense count: 4
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines
+Layout/EmptyLinesAroundModuleBody:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb'
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
+Layout/ExtraSpacing:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+
+# Offense count: 47
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: consistent, consistent_relative_to_receiver, special_for_inner_method_call, special_for_inner_method_call_in_parentheses
+Layout/FirstArgumentIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/argument.rb'
+    - 'lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/regular_expression_spec.rb'
+
+# Offense count: 4
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: special_inside_parentheses, consistent, align_brackets
+Layout/FirstArrayElementIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+
+# Offense count: 3
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: special_inside_parentheses, consistent, align_braces
+Layout/FirstHashElementIndentation:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: consistent, align_parentheses
+Layout/FirstParameterIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 4
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowMultipleStyles, EnforcedHashRocketStyle, EnforcedColonStyle, EnforcedLastArgumentHashStyle.
+# SupportedHashRocketStyles: key, separator, table
+# SupportedColonStyles: key, separator, table
+# SupportedLastArgumentHashStyles: always_inspect, always_ignore, ignore_implicit, ignore_explicit
+Layout/HashAlignment:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+Layout/HeredocIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
+# URISchemes: http, https
+Layout/LineLength:
+  Max: 252
+
+# Offense count: 12
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: symmetrical, new_line, same_line
+Layout/MultilineMethodCallBraceLayout:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/regular_expression_spec.rb'
+
+# Offense count: 3
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: aligned, indented, indented_relative_to_receiver
+Layout/MultilineMethodCallIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_generator.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: aligned, indented
+Layout/MultilineOperationIndentation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: space, no_space
+Layout/SpaceAroundEqualsInParameterDefault:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/argument.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+
+# Offense count: 5
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowForAlignment, EnforcedStyleForExponentOperator.
+# SupportedStylesForExponentOperator: space, no_space
+Layout/SpaceAroundOperators:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+    - 'lib/cucumber/cucumber_expressions/tree_regexp.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceBeforeBlockBraces:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_tokenizer_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/tree_regexp_spec.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: require_no_space, require_space
+Layout/SpaceInLambdaLiteral:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+
+# Offense count: 101
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideBlockBraces:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+    - 'lib/cucumber/cucumber_expressions/group_builder.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+    - 'lib/cucumber/cucumber_expressions/regular_expression.rb'
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_tokenizer_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/tree_regexp_spec.rb'
+
+# Offense count: 25
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: space, compact, no_space
+Layout/SpaceInsideParens:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/regular_expression_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: final_newline, final_blank_line
+Layout/TrailingEmptyLines:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Lint/AmbiguousOperatorPrecedence:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 3
+# Configuration parameters: AllowedMethods.
+# AllowedMethods: enums
+Lint/ConstantDefinitionInBlock:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+
+# Offense count: 8
+# Configuration parameters: IgnoreLiteralBranches, IgnoreConstantBranches.
+Lint/DuplicateBranch:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+
+# Offense count: 10
+# Configuration parameters: AllowComments.
+Lint/EmptyClass:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 1
+Lint/MixedRegexpCaptureTypes:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/tree_regexp_spec.rb'
+
+# Offense count: 1
+# This cop supports unsafe auto-correction (--auto-correct-all).
+Lint/NonDeterministicRequireOrder:
+  Exclude:
+    - 'Rakefile'
+
+# Offense count: 1
+Lint/NonLocalExitFromIterator:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb'
+
+# Offense count: 7
+# Configuration parameters: AllowKeywordBlockArguments.
+Lint/UnderscorePrefixedVariableName:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/group.rb'
+
+# Offense count: 14
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
+Lint/UnusedBlockArgument:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 10
+# Configuration parameters: IgnoredMethods, CountRepeatedAttributes.
+Metrics/AbcSize:
+  Max: 59
+
+# Offense count: 12
+# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, IgnoredMethods.
+# IgnoredMethods: refine
+Metrics/BlockLength:
+  Max: 187
+
+# Offense count: 1
+# Configuration parameters: CountBlocks.
+Metrics/BlockNesting:
+  Max: 4
+
+# Offense count: 1
+# Configuration parameters: CountComments, CountAsOne.
+Metrics/ClassLength:
+  Max: 165
+
+# Offense count: 7
+# Configuration parameters: IgnoredMethods.
+Metrics/CyclomaticComplexity:
+  Max: 15
+
+# Offense count: 22
+# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, IgnoredMethods.
+Metrics/MethodLength:
+  Max: 77
+
+# Offense count: 4
+# Configuration parameters: CountComments, CountAsOne.
+Metrics/ModuleLength:
+  Max: 188
+
+# Offense count: 1
+# Configuration parameters: CountKeywordArgs, MaxOptionalParameters.
+Metrics/ParameterLists:
+  Max: 6
+
+# Offense count: 6
+# Configuration parameters: IgnoredMethods.
+Metrics/PerceivedComplexity:
+  Max: 17
+
+# Offense count: 10
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+Naming/BlockParameterName:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+
+# Offense count: 2
+# Configuration parameters: ForbiddenDelimiters.
+# ForbiddenDelimiters: (?-mix:(^|\s)(EO[A-Z]{1}|END)(\s|$))
+Naming/HeredocDelimiterNaming:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 7
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+# AllowedNames: at, by, db, id, in, io, ip, of, on, os, pp, to
+Naming/MethodParameterName:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_generator.rb'
+    - 'lib/cucumber/cucumber_expressions/tree_regexp.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+
+# Offense count: 3
+# Configuration parameters: NamePrefix, ForbiddenPrefixes, AllowedMethods, MethodDefinitionMacros.
+# NamePrefix: is_, has_, have_
+# ForbiddenPrefixes: is_, has_, have_
+# AllowedMethods: is_a?
+# MethodDefinitionMacros: define_method, define_singleton_method
+Naming/PredicateName:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'lib/cucumber/cucumber_expressions/tree_regexp.rb'
+
+# Offense count: 20
+# Configuration parameters: EnforcedStyle, AllowedIdentifiers.
+# SupportedStyles: snake_case, camelCase
+Naming/VariableName:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+
+# Offense count: 2
+# Configuration parameters: EnforcedStyle, AllowModifiersOnSymbols.
+# SupportedStyles: inline, group
+Style/AccessModifierDeclarations:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/tree_regexp.rb'
+
+# Offense count: 7
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, ProceduralMethods, FunctionalMethods, IgnoredMethods, AllowBracesOnProceduralOneLiners, BracesRequiredMethods.
+# SupportedStyles: line_count_based, semantic, braces_for_chaining, always_braces
+# ProceduralMethods: benchmark, bm, bmbm, create, each_with_object, measure, new, realtime, tap, with_object
+# FunctionalMethods: let, let!, subject, watch
+# IgnoredMethods: lambda, proc, it
+Style/BlockDelimiters:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_transformation_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/tree_regexp_spec.rb'
+
+# Offense count: 1
+# This cop supports unsafe auto-correction (--auto-correct-all).
+Style/CaseLikeIf:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+
+# Offense count: 3
+# This cop supports safe auto-correction (--auto-correct).
+Style/ColonMethodCall:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/EmptyLiteral:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+Style/Encoding:
+  Exclude:
+    - 'Rakefile'
+    - 'cucumber-cucumber-expressions.gemspec'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/ExpandPathArguments:
+  Exclude:
+    - 'Rakefile'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: each, for
+Style/For:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: format, sprintf, percent
+Style/FormatString:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/generated_expression.rb'
+
+# Offense count: 32
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, always_true, never
+Style/FrozenStringLiteralComment:
+  Enabled: false
+
+# Offense count: 3
+# Configuration parameters: MinBodyLength.
+Style/GuardClause:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_generator.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 27
+# This cop supports safe auto-correction (--auto-correct).
+Style/IfUnlessModifier:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/combinatorial_generated_expression_factory.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_generator.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+    - 'lib/cucumber/cucumber_expressions/tree_regexp.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+
+# Offense count: 1
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: InverseMethods, InverseBlocks.
+Style/InverseMethods:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+
+# Offense count: 46
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: line_count_dependent, lambda, literal
+Style/Lambda:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+    - 'lib/cucumber/cucumber_expressions/regular_expression.rb'
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_generator_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_spec.rb'
+
+# Offense count: 21
+# This cop supports safe auto-correction (--auto-correct).
+Style/LineEndConcatenation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/MultilineTernaryOperator:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+
+# Offense count: 30
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: literals, strict
+Style/MutableConstant:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/NegatedIfElseCondition:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/NestedTernaryOperator:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: IncludeSemanticChanges.
+Style/NonNilCheck:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 11
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: EnforcedStyle, IgnoredMethods.
+# SupportedStyles: predicate, comparison
+Style/NumericPredicate:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 6
+# This cop supports safe auto-correction (--auto-correct).
+Style/ParallelAssignment:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/argument.rb'
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/generated_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_matcher.rb'
+    - 'spec/cucumber/cucumber_expressions/custom_parameter_type_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/PerlBackrefs:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+
+# Offense count: 1
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: short, verbose
+Style/PreferredHashMethods:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 9
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowedCompactTypes.
+# SupportedStyles: compact, exploded
+Style/RaiseArgs:
+  EnforcedStyle: compact
+
+# Offense count: 6
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: Methods.
+Style/RedundantArgument:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/RedundantInterpolation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/RedundantRegexpCharacterClass:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 19
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowMultipleReturnValues.
+Style/RedundantReturn:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/RedundantSelf:
+  Exclude:
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_spec.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/SelectByRegexp:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: AllowAsExpressionSeparator.
+Style/Semicolon:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: RequireEnglish.
+# SupportedStyles: use_perl_names, use_english_names
+Style/SpecialGlobalVars:
+  EnforcedStyle: use_perl_names
+
+# Offense count: 5
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: Mode.
+Style/StringConcatenation:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'spec/cucumber/cucumber_expressions/parameter_type_registry_spec.rb'
+
+# Offense count: 264
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
+# SupportedStyles: single_quotes, double_quotes
+Style/StringLiterals:
+  Enabled: false
+
+# Offense count: 7
+# This cop supports unsafe auto-correction (--auto-correct-all).
+# Configuration parameters: AllowMethodsWithArguments, IgnoredMethods.
+# IgnoredMethods: respond_to, define_method
+Style/SymbolProc:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'lib/cucumber/cucumber_expressions/errors.rb'
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+    - 'spec/cucumber/cucumber_expressions/cucumber_expression_tokenizer_spec.rb'
+    - 'spec/cucumber/cucumber_expressions/tree_regexp_spec.rb'
+
+# Offense count: 2
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyleForMultiline.
+# SupportedStylesForMultiline: comma, consistent_comma, no_comma
+Style/TrailingCommaInArrayLiteral:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+    - 'spec/cucumber/cucumber_expressions/combinatorial_generated_expression_factory_test.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: EnforcedStyleForMultiline.
+# SupportedStylesForMultiline: comma, consistent_comma, no_comma
+Style/TrailingCommaInHashLiteral:
+  Exclude:
+    - 'cucumber-cucumber-expressions.gemspec'
+
+# Offense count: 9
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: ExactNameMatch, AllowPredicates, AllowDSLWriters, IgnoreClassMethods, AllowedMethods.
+# AllowedMethods: to_ary, to_a, to_c, to_enum, to_h, to_hash, to_i, to_int, to_io, to_open, to_path, to_proc, to_r, to_regexp, to_str, to_s, to_sym
+Style/TrivialAccessors:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/ast.rb'
+
+# Offense count: 1
+# This cop supports safe auto-correction (--auto-correct).
+Style/WhileUntilDo:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_parser.rb'
+
+# Offense count: 6
+# This cop supports safe auto-correction (--auto-correct).
+# Configuration parameters: MinSize, WordRegex.
+# SupportedStyles: percent, brackets
+Style/WordArray:
+  EnforcedStyle: brackets
+
+# Offense count: 6
+# This cop supports unsafe auto-correction (--auto-correct-all).
+Style/ZeroLengthPredicate:
+  Exclude:
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression.rb'
+    - 'lib/cucumber/cucumber_expressions/cucumber_expression_tokenizer.rb'
+    - 'lib/cucumber/cucumber_expressions/parameter_type_registry.rb'
diff --git a/ruby/Rakefile b/ruby/Rakefile
index 85e0fc70a..4c21117ba 100644
--- a/ruby/Rakefile
+++ b/ruby/Rakefile
@@ -12,14 +12,4 @@ end
 require "rspec/core/rake_task"
 RSpec::Core::RakeTask.new(:spec)
 
-require_relative 'spec/capture_warnings'
-include CaptureWarnings
-namespace :spec do
-  task :warnings do
-    report_warnings do
-      Rake::Task['spec'].invoke
-    end
-  end
-end
-
-task default: ['spec:warnings']
+task default: :spec
diff --git a/ruby/cucumber-cucumber-expressions.gemspec b/ruby/cucumber-cucumber-expressions.gemspec
index 98554996c..ea67419d2 100644
--- a/ruby/cucumber-cucumber-expressions.gemspec
+++ b/ruby/cucumber-cucumber-expressions.gemspec
@@ -12,7 +12,7 @@ Gem::Specification.new do |s|
   s.homepage    = "https://github.com/cucumber/cucumber-expressions-ruby#readme"
   s.platform    = Gem::Platform::RUBY
   s.license     = "MIT"
-  s.required_ruby_version = ">= 2.3"
+  s.required_ruby_version = ">= 2.5"
 
   s.metadata    = {
                     'bug_tracker_uri'   => 'https://github.com/cucumber/cucumber/issues',
@@ -24,8 +24,9 @@ Gem::Specification.new do |s|
 
   s.add_development_dependency 'rake', '~> 13.0', '>= 13.0.6'
   s.add_development_dependency 'rspec', '~> 3.11', '>= 3.11.0'
+  s.add_development_dependency 'rubocop', '~> 1.27.0'
 
-  s.rubygems_version = ">= 1.6.1"
+  s.rubygems_version = ">= 3.0.8"
   s.files            = `git ls-files`.split("\n").reject {|path| path =~ /\.gitignore$/ }
   s.test_files       = `git ls-files -- spec/*`.split("\n")
   s.rdoc_options     = ["--charset=UTF-8"]
diff --git a/ruby/scripts/update-gemspec b/ruby/scripts/update-gemspec
deleted file mode 100755
index d45401fd5..000000000
--- a/ruby/scripts/update-gemspec
+++ /dev/null
@@ -1,32 +0,0 @@
-#!/usr/bin/env bash
-#
-# Updates the *.gemspec in the current directory to use the latest releases of gems
-#
-set -uf -o pipefail
-IFS=$'\n'
-
-gemspec=$(find . -maxdepth 1 -type f -name "*.gemspec")
-if [ "${gemspec}" = "" ]; then
-  exit 0
-fi
-add_dependency_lines=$(cat ${gemspec} | grep "s.add_[a-z_]*dependency '[^']*'")
-if [ $? -ne 0 ]; then
-  # No add_dependency_lines found - nothing to do
-  exit 0
-fi
-
-set -e
-
-gems=$(echo "${add_dependency_lines}" | tr -s ' ' | cut -d ' ' -f3 | cut -d"'" -f 2)
-while read -r gem; do
-  echo "upgrading ${gem}"
-  if [ "${gem}" = "bundler" ]; then
-    cat "${gemspec}" | sed "s/\(s.add_[a-z_]*dependency\) '${gem}'.*/\1 '${gem}', '>= 1.16.2'/" > ${gemspec}.tmp
-  else
-    gem_line=$(gem list "${gem}" --remote --all --no-prerelease | grep "^${gem}\s")
-    latest_patch_version=$(echo "${gem_line}" | cut -d'(' -f2 | cut -d')' -f1 | cut -d',' -f1 | cut -d' ' -f1)
-    latest_minor_version=$(echo "${latest_patch_version}" | cut -d. -f1,2)
-    cat "${gemspec}" | sed "s/\(s.add_[a-z_]*dependency\) '${gem}'.*/\1 '${gem}', '~> ${latest_minor_version}', '>= ${latest_patch_version}'/" > ${gemspec}.tmp
-  fi
-  mv ${gemspec}.tmp ${gemspec}
-done <<< "${gems}"
diff --git a/ruby/spec/capture_warnings.rb b/ruby/spec/capture_warnings.rb
deleted file mode 100644
index 2315009db..000000000
--- a/ruby/spec/capture_warnings.rb
+++ /dev/null
@@ -1,74 +0,0 @@
-# frozen_string_literal: true
-# With thanks to @myronmarston
-# https://github.com/vcr/vcr/blob/master/spec/capture_warnings.rb
-
-module CaptureWarnings
-  def report_warnings(&block)
-    current_dir = Dir.pwd
-    warnings, errors = capture_error(&block).partition { |line| line.include?('warning') }
-    project_warnings, other_warnings = warnings.uniq.partition { |line| line.include?(current_dir) }
-
-    if errors.any?
-      puts errors.join("\n")
-    end
-
-    if other_warnings.any?
-      puts "#{ other_warnings.count } warnings detected, set VIEW_OTHER_WARNINGS=true to see them."
-      print_warnings('other', other_warnings) if ENV['VIEW_OTHER_WARNINGS']
-    end
-
-    # Until they fix https://bugs.ruby-lang.org/issues/10661
-    if RUBY_VERSION == "2.2.0"
-      project_warnings = project_warnings.reject { |w| w =~ /warning: possible reference to past scope/ }
-    end
-
-    if project_warnings.any?
-      puts "#{ project_warnings.count } warnings detected"
-      print_warnings('cucumber-expressions', project_warnings)
-      fail "Please remove all cucumber-expressions warnings."
-    end
-
-    ensure_system_exit_if_required
-  end
-
-  def capture_error(&block)
-    old_stderr = STDERR.clone
-    pipe_r, pipe_w = IO.pipe
-    pipe_r.sync    = true
-    error          = String.new
-    reader = Thread.new do
-      begin
-        loop do
-          error << pipe_r.readpartial(1024)
-        end
-      rescue EOFError
-      end
-    end
-    STDERR.reopen(pipe_w)
-    block.call
-  ensure
-    capture_system_exit
-    STDERR.reopen(old_stderr)
-    pipe_w.close
-    reader.join
-    return error.split("\n")
-  end
-
-  def print_warnings(type, warnings)
-    puts
-    puts "-" * 30 + " #{type} warnings: " + "-" * 30
-    puts
-    puts warnings.join("\n")
-    puts
-    puts "-" * 75
-    puts
-  end
-
-  def ensure_system_exit_if_required
-    raise @system_exit if @system_exit
-  end
-
-  def capture_system_exit
-    @system_exit = $!
-  end
-end