diff --git a/grpc.gemspec b/grpc.gemspec
index dbb0c024e12..bd46521e276 100644
--- a/grpc.gemspec
+++ b/grpc.gemspec
@@ -36,12 +36,12 @@ Gem::Specification.new do |s|
   s.add_development_dependency 'bundler',            '>= 1.9'
   s.add_development_dependency 'facter',             '~> 2.4'
   s.add_development_dependency 'logging',            '~> 2.0'
-  s.add_development_dependency 'simplecov',          '~> 0.14.1'
+  s.add_development_dependency 'simplecov',          '~> 0.22'
   s.add_development_dependency 'rake',               '~> 13.0'
   s.add_development_dependency 'rake-compiler',      '<= 1.1.1'
   s.add_development_dependency 'rake-compiler-dock', '~> 1.2'
   s.add_development_dependency 'rspec',              '~> 3.6'
-  s.add_development_dependency 'rubocop',            '~> 0.49.1'
+  s.add_development_dependency 'rubocop',            '~> 1.41.0'
   s.add_development_dependency 'signet',             '~> 0.7'
   s.add_development_dependency 'googleauth',         '>= 0.5.1', '< 0.10'
 
diff --git a/src/ruby/.rubocop_todo.yml b/src/ruby/.rubocop_todo.yml
index e2b5d92146b..347e94e87f8 100644
--- a/src/ruby/.rubocop_todo.yml
+++ b/src/ruby/.rubocop_todo.yml
@@ -1,127 +1,171 @@
 # This configuration was generated by
 # `rubocop --auto-gen-config`
-# on 2017-09-04 17:00:36 +0200 using RuboCop version 0.49.1.
+# on 2022-12-30 04:58:05 UTC using RuboCop version 1.41.1.
 # 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.
 
+# Offense count: 1
+# Configuration parameters: Severity, Include.
+# Include: **/*.gemspec
+Gemspec/RequiredRubyVersion:
+  Exclude:
+    - 'tools/grpc-tools.gemspec'
+
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: with_first_argument, with_fixed_indentation
+Layout/ArgumentAlignment:
+  Exclude:
+    - 'qps/proxy-worker.rb'
+
 # Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, IndentOneStep, IndentationWidth.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, IndentOneStep, IndentationWidth.
 # SupportedStyles: case, end
 Layout/CaseIndentation:
   Exclude:
     - 'tools/platform_check.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowForAlignment.
 Layout/CommentIndentation:
   Exclude:
     - 'qps/client.rb'
 
+# Offense count: 88
+# This cop supports safe autocorrection (--autocorrect).
+Layout/EmptyLineAfterGuardClause:
+  Enabled: false
+
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Layout/EmptyLineAfterMagicComment:
   Exclude:
     - 'tools/grpc-tools.gemspec'
 
-# Offense count: 33
-# Cop supports --auto-correct.
-# Configuration parameters: AllowAdjacentOneLineDefs, NumberOfEmptyLines.
+# Offense count: 41
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EmptyLineBetweenMethodDefs, EmptyLineBetweenClassDefs, EmptyLineBetweenModuleDefs, AllowAdjacentOneLineDefs, NumberOfEmptyLines.
 Layout/EmptyLineBetweenDefs:
   Exclude:
+    - 'pb/src/proto/grpc/testing/test_services_pb.rb'
     - 'qps/client.rb'
     - 'qps/histogram.rb'
     - 'qps/proxy-worker.rb'
+    - 'qps/qps-common.rb'
     - 'qps/server.rb'
     - 'qps/worker.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Layout/EmptyLines:
   Exclude:
     - 'qps/qps-common.rb'
 
-# Offense count: 8
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowAliasSyntax, AllowedMethods.
+# AllowedMethods: alias_method, public, protected, private
+Layout/EmptyLinesAroundAttributeAccessor:
+  Exclude:
+    - 'lib/grpc/generic/active_call.rb'
+
+# Offense count: 12
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: empty_lines, empty_lines_except_namespace, empty_lines_special, no_empty_lines, beginning_only, ending_only
 Layout/EmptyLinesAroundClassBody:
   Exclude:
     - 'pb/grpc/testing/duplicate/echo_duplicate_services_pb.rb'
     - 'pb/grpc/testing/metrics_services_pb.rb'
     - 'pb/src/proto/grpc/testing/test_services_pb.rb'
+    - 'qps/src/proto/grpc/testing/benchmark_service_services_pb.rb'
     - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
-    - 'qps/src/proto/grpc/testing/services_services_pb.rb'
+    - 'qps/src/proto/grpc/testing/report_qps_scenario_service_services_pb.rb'
+    - 'qps/src/proto/grpc/testing/worker_service_services_pb.rb'
 
-# Offense count: 28
-# Cop supports --auto-correct.
-# Configuration parameters: AllowForAlignment, ForceEqualSignAlignment.
+# Offense count: 23
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowForAlignment, AllowBeforeTrailingComments, ForceEqualSignAlignment.
 Layout/ExtraSpacing:
-  Enabled: false
-
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-# SupportedStyles: normal, rails
-Layout/IndentationConsistency:
   Exclude:
+    - 'bin/math_client.rb'
+    - 'bin/math_server.rb'
+    - 'lib/grpc/generic/active_call.rb'
+    - 'lib/grpc/generic/bidi_call.rb'
+    - 'lib/grpc/generic/rpc_desc.rb'
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'lib/grpc/generic/service.rb'
     - 'pb/grpc/health/checker.rb'
+    - 'spec/call_spec.rb'
+    - 'spec/channel_credentials_spec.rb'
+    - 'spec/client_server_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'spec/generic/rpc_server_spec.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: Width, IgnoredPatterns.
-Layout/IndentationWidth:
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: IndentationWidth, EnforcedStyle.
+# SupportedStyles: spaces, tabs
+Layout/IndentationStyle:
   Exclude:
-    - 'pb/grpc/health/checker.rb'
+    - 'qps/client.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: symmetrical, new_line, same_line
 Layout/MultilineHashBraceLayout:
   Exclude:
     - 'spec/generic/active_call_spec.rb'
 
-# Offense count: 70
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# Offense count: 121
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: symmetrical, new_line, same_line
 Layout/MultilineMethodCallBraceLayout:
   Enabled: false
 
 # Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, IndentationWidth.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
 # SupportedStyles: aligned, indented, indented_relative_to_receiver
 Layout/MultilineMethodCallIndentation:
   Exclude:
     - 'spec/generic/rpc_desc_spec.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: symmetrical, new_line, same_line
 Layout/MultilineMethodDefinitionBraceLayout:
   Exclude:
     - 'spec/generic/client_stub_spec.rb'
 
-# Offense count: 5
-# Cop supports --auto-correct.
-Layout/SpaceAfterColon:
+# Offense count: 4
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, IndentationWidth.
+# SupportedStyles: aligned, indented
+Layout/MultilineOperationIndentation:
   Exclude:
-    - 'lib/grpc/generic/rpc_server.rb'
+    - 'qps/proxy-worker.rb'
 
-# Offense count: 7
-# Cop supports --auto-correct.
+# Offense count: 8
+# This cop supports safe autocorrection (--autocorrect).
 Layout/SpaceAfterComma:
   Exclude:
     - 'qps/client.rb'
+    - 'qps/histogram.rb'
 
-# Offense count: 27
-# Cop supports --auto-correct.
-# Configuration parameters: AllowForAlignment.
+# Offense count: 30
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowForAlignment, EnforcedStyleForExponentOperator.
+# SupportedStylesForExponentOperator: space, no_space
 Layout/SpaceAroundOperators:
   Exclude:
     - 'qps/client.rb'
@@ -129,27 +173,38 @@ Layout/SpaceAroundOperators:
     - 'qps/proxy-worker.rb'
     - 'qps/server.rb'
     - 'spec/generic/active_call_spec.rb'
-    - 'spec/generic/rpc_server_spec.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, EnforcedStyleForEmptyBraces, SupportedStylesForEmptyBraces, SpaceBeforeBlockParameters.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
 # SupportedStyles: space, no_space
 # SupportedStylesForEmptyBraces: space, no_space
-Layout/SpaceInsideBlockBraces:
+Layout/SpaceBeforeBlockBraces:
   Exclude:
-    - 'stress/stress_client.rb'
+    - 'qps/histogram.rb'
 
 # Offense count: 4
-# Cop supports --auto-correct.
-Layout/SpaceInsideBrackets:
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBrackets.
+# SupportedStyles: space, no_space, compact
+# SupportedStylesForEmptyBrackets: space, no_space
+Layout/SpaceInsideArrayLiteralBrackets:
   Exclude:
     - 'tools/bin/grpc_tools_ruby_protoc'
     - 'tools/bin/grpc_tools_ruby_protoc_plugin'
 
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces, SpaceBeforeBlockParameters.
+# SupportedStyles: space, no_space
+# SupportedStylesForEmptyBraces: space, no_space
+Layout/SpaceInsideBlockBraces:
+  Exclude:
+    - 'stress/stress_client.rb'
+
 # Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, EnforcedStyleForEmptyBraces, SupportedStylesForEmptyBraces.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, EnforcedStyleForEmptyBraces.
 # SupportedStyles: space, no_space, compact
 # SupportedStylesForEmptyBraces: space, no_space
 Layout/SpaceInsideHashLiteralBraces:
@@ -157,32 +212,83 @@ Layout/SpaceInsideHashLiteralBraces:
     - 'qps/server.rb'
 
 # Offense count: 6
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Layout/SpaceInsidePercentLiteralDelimiters:
   Exclude:
     - 'spec/generic/client_stub_spec.rb'
     - 'tools/grpc-tools.gemspec'
 
-# Offense count: 3
-# Cop supports --auto-correct.
-Layout/Tab:
-  Exclude:
-    - 'pb/grpc/health/checker.rb'
-    - 'qps/client.rb'
-
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowInHeredoc.
 Layout/TrailingWhitespace:
   Exclude:
     - 'qps/worker.rb'
 
+# Offense count: 34
+# Configuration parameters: AllowedMethods.
+# AllowedMethods: enums
+Lint/ConstantDefinitionInBlock:
+  Exclude:
+    - 'spec/call_credentials_spec.rb'
+    - 'spec/channel_credentials_spec.rb'
+    - 'spec/client_auth_spec.rb'
+    - 'spec/compression_options_spec.rb'
+    - 'spec/debug_message_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'spec/generic/rpc_desc_spec.rb'
+    - 'spec/generic/rpc_server_pool_spec.rb'
+    - 'spec/generic/rpc_server_spec.rb'
+    - 'spec/generic/service_spec.rb'
+    - 'spec/pb/health/checker_spec.rb'
+    - 'spec/server_credentials_spec.rb'
+    - 'spec/user_agent_spec.rb'
+
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Lint/DuplicateRequire:
+  Exclude:
+    - 'spec/google_rpc_status_utils_spec.rb'
+
 # Offense count: 1
 Lint/IneffectiveAccessModifier:
   Exclude:
     - 'lib/grpc/generic/active_call.rb'
 
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Lint/InterpolationCheck:
+  Exclude:
+    - 'qps/qps-common.rb'
+
 # Offense count: 4
-# Cop supports --auto-correct.
+# Configuration parameters: MaximumRangeSize.
+Lint/MissingCopEnableDirective:
+  Exclude:
+    - 'end2end/call_credentials_returning_bad_metadata_doesnt_kill_background_thread_test.rb'
+    - 'end2end/call_credentials_timeout_test.rb'
+    - 'lib/grpc/generic/client_stub.rb'
+
+# Offense count: 14
+Lint/MissingSuper:
+  Exclude:
+    - 'bin/noproto_server.rb'
+    - 'end2end/channel_closing_client.rb'
+    - 'end2end/end2end_common.rb'
+    - 'end2end/graceful_sig_handling_client.rb'
+    - 'end2end/graceful_sig_stop_client.rb'
+    - 'end2end/killed_client_thread_test.rb'
+    - 'end2end/sig_handling_client.rb'
+    - 'lib/grpc/generic/service.rb'
+    - 'pb/grpc/health/checker.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/worker.rb'
+    - 'stress/metrics_server.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 4
+# This cop supports unsafe autocorrection (--autocorrect-all).
 Lint/PercentStringArray:
   Exclude:
     - 'spec/client_server_spec.rb'
@@ -190,6 +296,16 @@ Lint/PercentStringArray:
     - 'spec/generic/client_stub_spec.rb'
 
 # Offense count: 4
+# This cop supports safe autocorrection (--autocorrect).
+Lint/RedundantRequireStatement:
+  Exclude:
+    - 'end2end/end2end_common.rb'
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'qps/histogram.rb'
+    - 'stress/stress_client.rb'
+
+# Offense count: 4
+# This cop supports safe autocorrection (--autocorrect).
 Lint/ScriptPermission:
   Exclude:
     - 'qps/client.rb'
@@ -197,21 +313,30 @@ Lint/ScriptPermission:
     - 'qps/qps-common.rb'
     - 'qps/server.rb'
 
+# Offense count: 1
+# Configuration parameters: AllowedPatterns, IgnoredPatterns.
+# AllowedPatterns: (?-mix:(exactly|at_least|at_most)\(\d+\)\.times)
+Lint/UnreachableLoop:
+  Exclude:
+    - 'spec/channel_connection_spec.rb'
+
 # Offense count: 2
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: IgnoreEmptyBlocks, AllowUnusedKeywordArguments.
 Lint/UnusedBlockArgument:
   Exclude:
     - 'qps/client.rb'
 
-# Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods.
+# Offense count: 3
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowUnusedKeywordArguments, IgnoreEmptyMethods, IgnoreNotImplementedMethods.
 Lint/UnusedMethodArgument:
   Exclude:
+    - 'end2end/server_marshalling_graceful_errors_test.rb'
     - 'qps/client.rb'
 
 # Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: ContextCreatingMethods, MethodCreatingMethods.
 Lint/UselessAccessModifier:
   Exclude:
@@ -222,82 +347,137 @@ Lint/UselessAssignment:
   Exclude:
     - 'qps/client.rb'
 
-# Offense count: 4
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Lint/UselessMethodDefinition:
+  Exclude:
+    - 'lib/grpc/generic/service.rb'
+
+# Offense count: 5
+# Configuration parameters: CheckForMethodsWithNoSideEffects.
 Lint/Void:
   Exclude:
+    - 'spec/generic/rpc_server_spec.rb'
     - 'stress/metrics_server.rb'
     - 'stress/stress_client.rb'
 
-# Offense count: 53
+# Offense count: 61
+# Configuration parameters: AllowedMethods, AllowedPatterns, IgnoredMethods, CountRepeatedAttributes.
 Metrics/AbcSize:
-  Max: 57
+  Max: 61
 
-# Offense count: 81
-# Configuration parameters: CountComments, ExcludedMethods.
+# Offense count: 116
+# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, AllowedMethods, AllowedPatterns, IgnoredMethods.
+# AllowedMethods: refine
 Metrics/BlockLength:
-  Max: 715
+  Max: 563
 
-# Offense count: 82
-# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, IgnoredPatterns.
-# URISchemes: http, https
-Metrics/LineLength:
-  Max: 141
+# Offense count: 2
+# Configuration parameters: AllowedMethods, AllowedPatterns, IgnoredMethods.
+Metrics/CyclomaticComplexity:
+  Max: 11
 
-# Offense count: 82
-# Configuration parameters: CountComments.
+# Offense count: 106
+# Configuration parameters: CountComments, CountAsOne, ExcludedMethods, AllowedMethods, AllowedPatterns, IgnoredMethods.
 Metrics/MethodLength:
   Max: 54
 
-# Offense count: 5
-# Configuration parameters: CountKeywordArgs.
+# Offense count: 6
+# Configuration parameters: CountKeywordArgs, MaxOptionalParameters.
 Metrics/ParameterLists:
   Max: 7
 
-# Offense count: 1
-# Cop supports --auto-correct.
-Performance/RedundantBlockCall:
+# Offense count: 2
+# Configuration parameters: AllowedMethods, AllowedPatterns, IgnoredMethods.
+Metrics/PerceivedComplexity:
+  Max: 10
+
+# Offense count: 7
+Naming/AccessorMethodName:
   Exclude:
-    - 'spec/generic/client_stub_spec.rb'
+    - 'qps/server.rb'
+    - 'stress/metrics_server.rb'
+    - 'stress/stress_client.rb'
 
-# Offense count: 5
-# Cop supports --auto-correct.
-# Configuration parameters: MaxKeyValuePairs.
-Performance/RedundantMerge:
+# Offense count: 2
+# Configuration parameters: ExpectMatchingDefinition, CheckDefinitionPathHierarchy, CheckDefinitionPathHierarchyRoots, Regex, IgnoreExecutableScripts, AllowedAcronyms.
+# CheckDefinitionPathHierarchyRoots: lib, spec, test, src
+# AllowedAcronyms: CLI, DSL, ACL, API, ASCII, CPU, CSS, DNS, EOF, GUID, HTML, HTTP, HTTPS, ID, IP, JSON, LHS, QPS, RAM, RHS, RPC, SLA, SMTP, SQL, SSH, TCP, TLS, TTL, UDP, UI, UID, UUID, URI, URL, UTF8, VM, XML, XMPP, XSRF, XSS
+Naming/FileName:
   Exclude:
-    - 'spec/generic/active_call_spec.rb'
-    - 'spec/generic/client_stub_spec.rb'
+    - 'qps/src/proto/grpc/testing/proxy-service_pb.rb'
+    - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
 
-# Offense count: 8
-# Cop supports --auto-correct.
-Performance/TimesMap:
+# Offense count: 28
+# Configuration parameters: MinNameLength, AllowNamesEndingInNumbers, AllowedNames, ForbiddenNames.
+# AllowedNames: as, at, by, cc, db, id, if, in, io, ip, of, on, os, pp, to
+Naming/MethodParameterName:
   Exclude:
+    - 'bin/noproto_client.rb'
+    - 'bin/noproto_server.rb'
+    - 'end2end/channel_closing_client.rb'
+    - 'end2end/multiple_killed_watching_threads_test.rb'
+    - 'lib/grpc/generic/service.rb'
+    - 'qps/proxy-worker.rb'
+    - 'qps/qps-common.rb'
+    - 'qps/worker.rb'
     - 'spec/channel_spec.rb'
-    - 'spec/client_server_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'spec/generic/service_spec.rb'
     - 'spec/server_spec.rb'
+    - 'spec/support/services.rb'
 
-# Offense count: 7
-Style/AccessorMethodName:
+# Offense count: 1
+# 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:
-    - 'qps/server.rb'
-    - 'stress/metrics_server.rb'
-    - 'stress/stress_client.rb'
+    - 'spec/**/*'
+    - 'ext/grpc/extconf.rb'
+
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: PreferredName.
+Naming/RescuedExceptionsVariableName:
+  Exclude:
+    - 'lib/grpc/errors.rb'
+
+# Offense count: 5
+# Configuration parameters: EnforcedStyle, CheckMethodNames, CheckSymbols, AllowedIdentifiers, AllowedPatterns.
+# SupportedStyles: snake_case, normalcase, non_integer
+# AllowedIdentifiers: capture3, iso8601, rfc1123_date, rfc822, rfc2822, rfc3339
+Naming/VariableNumber:
+  Exclude:
+    - 'qps/src/proto/grpc/testing/control_pb.rb'
 
 # Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: prefer_alias, prefer_alias_method
 Style/Alias:
   Exclude:
     - 'lib/grpc/generic/rpc_server.rb'
     - 'lib/grpc/notifier.rb'
 
-# Offense count: 7
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, ProceduralMethods, FunctionalMethods, IgnoredMethods.
-# SupportedStyles: line_count_based, semantic, braces_for_chaining
+# Offense count: 2
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, conditionals
+Style/AndOr:
+  Exclude:
+    - 'ext/grpc/extconf.rb'
+
+# Offense count: 8
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, ProceduralMethods, FunctionalMethods, AllowedMethods, AllowedPatterns, 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
+# AllowedMethods: lambda, proc, it
 Style/BlockDelimiters:
   Exclude:
     - 'qps/client.rb'
@@ -305,44 +485,55 @@ Style/BlockDelimiters:
     - 'qps/server.rb'
     - 'qps/worker.rb'
 
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/CaseLikeIf:
+  Exclude:
+    - 'lib/grpc/generic/bidi_call.rb'
+
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowedMethods, AllowedPatterns, IgnoredMethods.
+# AllowedMethods: ==, equal?, eql?
+Style/ClassEqualityComparison:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
+
 # Offense count: 2
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Style/ClassMethods:
   Exclude:
     - 'tools/platform_check.rb'
 
-# Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, SingleLineConditionsOnly, IncludeTernaryExpressions.
+# Offense count: 3
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, SingleLineConditionsOnly, IncludeTernaryExpressions.
 # SupportedStyles: assign_to_condition, assign_inside_condition
 Style/ConditionalAssignment:
   Exclude:
+    - 'ext/grpc/extconf.rb'
     - 'lib/grpc/generic/rpc_server.rb'
     - 'lib/grpc/generic/service.rb'
 
-# Offense count: 19
-Style/Documentation:
+# Offense count: 2
+# This cop supports safe autocorrection (--autocorrect).
+Style/DefWithParentheses:
   Exclude:
-    - 'spec/**/*'
-    - 'test/**/*'
-    - 'pb/grpc/testing/duplicate/echo_duplicate_services_pb.rb'
-    - 'pb/grpc/testing/metrics_services_pb.rb'
-    - 'pb/src/proto/grpc/testing/test_pb.rb'
-    - 'qps/client.rb'
-    - 'qps/histogram.rb'
-    - 'qps/proxy-worker.rb'
-    - 'qps/server.rb'
-    - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
-    - 'qps/src/proto/grpc/testing/services_pb.rb'
-    - 'qps/src/proto/grpc/testing/services_services_pb.rb'
-    - 'qps/worker.rb'
-    - 'stress/metrics_server.rb'
-    - 'stress/stress_client.rb'
-    - 'tools/platform_check.rb'
+    - 'ext/grpc/extconf.rb'
+
+# Offense count: 29
+# This cop supports safe autocorrection (--autocorrect).
+Style/Dir:
+  Enabled: false
+
+# Offense count: 24
+# Configuration parameters: AllowedConstants.
+Style/Documentation:
+  Enabled: false
 
 # Offense count: 8
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: compact, expanded
 Style/EmptyMethod:
   Exclude:
@@ -350,91 +541,165 @@ Style/EmptyMethod:
     - 'lib/grpc/logconfig.rb'
     - 'spec/generic/rpc_desc_spec.rb'
 
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+Style/ExpandPathArguments:
+  Exclude:
+    - 'lib/grpc.rb'
+
 # Offense count: 2
-# Configuration parameters: ExpectMatchingDefinition, Regex, IgnoreExecutableScripts, AllowedAcronyms.
-# AllowedAcronyms: CLI, DSL, ACL, API, ASCII, CPU, CSS, DNS, EOF, GUID, HTML, HTTP, HTTPS, ID, IP, JSON, LHS, QPS, RAM, RHS, RPC, SLA, SMTP, SQL, SSH, TCP, TLS, TTL, UDP, UI, UID, UUID, URI, URL, UTF8, VM, XML, XMPP, XSRF, XSS
-Style/FileName:
+# This cop supports safe autocorrection (--autocorrect).
+Style/ExplicitBlockArgument:
   Exclude:
-    - 'qps/src/proto/grpc/testing/proxy-service_pb.rb'
-    - 'qps/src/proto/grpc/testing/proxy-service_services_pb.rb'
+    - 'lib/grpc/generic/active_call.rb'
+    - 'lib/grpc/generic/interceptors.rb'
 
-# Offense count: 12
+# Offense count: 118
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: always, always_true, never
+Style/FrozenStringLiteralComment:
+  Enabled: false
+
+# Offense count: 66
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/GlobalStdStream:
+  Enabled: false
+
+# Offense count: 15
 # Configuration parameters: AllowedVariables.
 Style/GlobalVars:
   Exclude:
     - 'ext/grpc/extconf.rb'
 
-# Offense count: 3
-# Configuration parameters: MinBodyLength.
+# Offense count: 4
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: MinBodyLength, AllowConsecutiveConditionals.
 Style/GuardClause:
   Exclude:
     - 'lib/grpc/generic/bidi_call.rb'
     - 'lib/grpc/generic/rpc_server.rb'
     - 'qps/client.rb'
 
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
+# Offense count: 12
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, EnforcedShorthandSyntax, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
 # SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
+# SupportedShorthandSyntax: always, never, either, consistent
 Style/HashSyntax:
   Exclude:
+    - 'pb/src/proto/grpc/testing/empty_pb.rb'
+    - 'pb/src/proto/grpc/testing/messages_pb.rb'
+    - 'pb/src/proto/grpc/testing/test_pb.rb'
+    - 'qps/src/proto/grpc/core/stats_pb.rb'
+    - 'qps/src/proto/grpc/testing/benchmark_service_pb.rb'
+    - 'qps/src/proto/grpc/testing/control_pb.rb'
+    - 'qps/src/proto/grpc/testing/messages_pb.rb'
+    - 'qps/src/proto/grpc/testing/payloads_pb.rb'
+    - 'qps/src/proto/grpc/testing/report_qps_scenario_service_pb.rb'
+    - 'qps/src/proto/grpc/testing/stats_pb.rb'
+    - 'qps/src/proto/grpc/testing/worker_service_pb.rb'
     - 'stress/metrics_server.rb'
 
+# Offense count: 3
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/HashTransformKeys:
+  Exclude:
+    - 'spec/client_server_spec.rb'
+
 # Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowIfModifier.
 Style/IfInsideElse:
   Exclude:
     - 'lib/grpc/generic/rpc_desc.rb'
 
-# Offense count: 4
-# Cop supports --auto-correct.
-# Configuration parameters: MaxLineLength.
+# Offense count: 32
+# This cop supports safe autocorrection (--autocorrect).
 Style/IfUnlessModifier:
+  Enabled: false
+
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/InfiniteLoop:
   Exclude:
-    - 'ext/grpc/extconf.rb'
-    - 'qps/histogram.rb'
-    - 'stress/stress_client.rb'
+    - 'qps/proxy-worker.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/LineEndConcatenation:
+  Exclude:
+    - 'qps/proxy-worker.rb'
+
+# Offense count: 3
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowedMethods, AllowedPatterns, IgnoredMethods.
 Style/MethodCallWithoutArgsParentheses:
   Exclude:
+    - 'ext/grpc/extconf.rb'
     - 'qps/client.rb'
 
-# Offense count: 3
-# Cop supports --auto-correct.
+# Offense count: 14
+Style/MixinUsage:
+  Exclude:
+    - 'bin/math_client.rb'
+    - 'end2end/end2end_common.rb'
+    - 'end2end/multiple_killed_watching_threads_test.rb'
+    - 'spec/call_spec.rb'
+    - 'spec/channel_connection_spec.rb'
+    - 'spec/client_server_spec.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'spec/google_rpc_status_utils_spec.rb'
+
+# Offense count: 2
+# This cop supports safe autocorrection (--autocorrect).
 Style/MultilineIfModifier:
   Exclude:
     - 'lib/grpc/generic/bidi_call.rb'
-    - 'lib/grpc/generic/client_stub.rb'
     - 'spec/spec_helper.rb'
 
-# Offense count: 7
-# Cop supports --auto-correct.
+# Offense count: 5
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: literals, strict
 Style/MutableConstant:
   Exclude:
-    - 'ext/grpc/extconf.rb'
     - 'lib/grpc/version.rb'
     - 'spec/compression_options_spec.rb'
     - 'spec/generic/active_call_spec.rb'
     - 'tools/version.rb'
 
 # Offense count: 1
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Style/NegatedWhile:
   Exclude:
     - 'qps/client.rb'
 
-# Offense count: 1
-# Cop supports --auto-correct.
-# Configuration parameters: AutoCorrect, EnforcedStyle, SupportedStyles.
+# Offense count: 10
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: EnforcedStyle, AllowedMethods, AllowedPatterns, IgnoredMethods.
 # SupportedStyles: predicate, comparison
 Style/NumericPredicate:
   Exclude:
     - 'spec/**/*'
+    - 'end2end/end2end_common.rb'
     - 'ext/grpc/extconf.rb'
+    - 'lib/grpc/core/time_consts.rb'
+    - 'lib/grpc/generic/rpc_server.rb'
+    - 'qps/client.rb'
+    - 'qps/qps-common.rb'
+
+# Offense count: 3
+# Configuration parameters: AllowedMethods.
+# AllowedMethods: respond_to_missing?
+Style/OptionalBooleanParameter:
+  Exclude:
+    - 'lib/grpc/generic/active_call.rb'
+    - 'lib/grpc/generic/bidi_call.rb'
 
 # Offense count: 7
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Style/ParallelAssignment:
   Exclude:
     - 'bin/math_server.rb'
@@ -444,8 +709,8 @@ Style/ParallelAssignment:
     - 'spec/generic/rpc_server_pool_spec.rb'
     - 'spec/generic/rpc_server_spec.rb'
 
-# Offense count: 8
-# Cop supports --auto-correct.
+# Offense count: 9
+# This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: PreferredDelimiters.
 Style/PercentLiteralDelimiters:
   Exclude:
@@ -456,15 +721,43 @@ Style/PercentLiteralDelimiters:
     - 'tools/grpc-tools.gemspec'
 
 # Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, AllowedCompactTypes.
 # SupportedStyles: compact, exploded
 Style/RaiseArgs:
   Exclude:
     - 'stress/metrics_server.rb'
 
+# Offense count: 2
+# This cop supports safe autocorrection (--autocorrect).
+Style/RedundantAssignment:
+  Exclude:
+    - 'spec/generic/client_stub_spec.rb'
+
+# Offense count: 4
+# This cop supports safe autocorrection (--autocorrect).
+Style/RedundantBegin:
+  Exclude:
+    - 'bin/math_server.rb'
+    - 'end2end/call_credentials_timeout_test.rb'
+    - 'end2end/channel_closing_client.rb'
+    - 'end2end/channel_closing_test.rb'
+
+# Offense count: 3
+# This cop supports safe autocorrection (--autocorrect).
+Style/RedundantFileExtensionInRequire:
+  Exclude:
+    - 'stress/metrics_server.rb'
+    - 'tools/grpc-tools.gemspec'
+
+# Offense count: 5
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/RedundantInterpolation:
+  Exclude:
+    - 'pb/grpc/health/checker.rb'
+
 # Offense count: 4
-# Cop supports --auto-correct.
+# This cop supports safe autocorrection (--autocorrect).
 Style/RedundantParentheses:
   Exclude:
     - 'lib/grpc/generic/rpc_server.rb'
@@ -472,70 +765,111 @@ Style/RedundantParentheses:
     - 'qps/proxy-worker.rb'
     - 'spec/generic/rpc_desc_spec.rb'
 
-# Offense count: 5
-# Cop supports --auto-correct.
+# Offense count: 8
+# This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: AllowMultipleReturnValues.
 Style/RedundantReturn:
   Exclude:
     - 'end2end/grpc_class_init_client.rb'
 
-# Offense count: 77
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
+# Offense count: 5
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
+# SupportedStyles: implicit, explicit
+Style/RescueStandardError:
+  Exclude:
+    - 'end2end/end2end_common.rb'
+    - 'lib/grpc/generic/active_call.rb'
+    - 'spec/google_rpc_status_utils_spec.rb'
+
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: ConvertCodeThatCanStartToReturnNil, AllowedMethods, MaxChainLength.
+# AllowedMethods: present?, blank?, presence, try, try!
+Style/SafeNavigation:
+  Exclude:
+    - 'lib/grpc/generic/bidi_call.rb'
+
+# Offense count: 127
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle.
 # SupportedStyles: only_raise, only_fail, semantic
 Style/SignalException:
   Enabled: false
 
+# Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
+Style/SlicingWithRange:
+  Exclude:
+    - 'lib/grpc/generic/rpc_server.rb'
+
 # Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles.
-# SupportedStyles: use_perl_names, use_english_names
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: RequireEnglish, EnforcedStyle.
+# SupportedStyles: use_perl_names, use_english_names, use_builtin_english_names
 Style/SpecialGlobalVars:
   Exclude:
     - 'ext/grpc/extconf.rb'
     - 'stress/stress_client.rb'
 
-# Offense count: 189
-# Cop supports --auto-correct.
-# Configuration parameters: EnforcedStyle, SupportedStyles, ConsistentQuotesInMultiline.
-# SupportedStyles: single_quotes, double_quotes
-Style/StringLiterals:
+# Offense count: 64
+# This cop supports safe autocorrection (--autocorrect).
+Style/StderrPuts:
+  Enabled: false
+
+# Offense count: 28
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: Mode.
+Style/StringConcatenation:
   Exclude:
-    - 'pb/grpc/testing/metrics_pb.rb'
-    - 'pb/src/proto/grpc/testing/empty_pb.rb'
-    - 'pb/src/proto/grpc/testing/messages_pb.rb'
+    - 'ext/grpc/extconf.rb'
     - 'qps/proxy-worker.rb'
     - 'qps/server.rb'
-    - 'qps/src/proto/grpc/testing/control_pb.rb'
-    - 'qps/src/proto/grpc/testing/messages_pb.rb'
-    - 'qps/src/proto/grpc/testing/payloads_pb.rb'
-    - 'qps/src/proto/grpc/testing/proxy-service_pb.rb'
-    - 'qps/src/proto/grpc/testing/stats_pb.rb'
     - 'qps/worker.rb'
+    - 'spec/generic/active_call_spec.rb'
+    - 'spec/generic/client_stub_spec.rb'
+    - 'tools/bin/grpc_tools_ruby_protoc'
+    - 'tools/bin/grpc_tools_ruby_protoc_plugin'
+
+# Offense count: 296
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyle, ConsistentQuotesInMultiline.
+# SupportedStyles: single_quotes, double_quotes
+Style/StringLiterals:
+  Enabled: false
 
 # Offense count: 1
+# This cop supports unsafe autocorrection (--autocorrect-all).
 Style/StructInheritance:
   Exclude:
     - 'lib/grpc/generic/rpc_desc.rb'
 
 # Offense count: 10
-# Cop supports --auto-correct.
-# Configuration parameters: MinSize, SupportedStyles.
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: MinSize.
 # SupportedStyles: percent, brackets
 Style/SymbolArray:
   EnforcedStyle: brackets
 
 # Offense count: 2
-# Cop supports --auto-correct.
-# Configuration parameters: IgnoredMethods.
-# IgnoredMethods: respond_to, define_method
+# This cop supports unsafe autocorrection (--autocorrect-all).
+# Configuration parameters: AllowMethodsWithArguments, AllowedMethods, AllowedPatterns, IgnoredMethods, AllowComments.
+# AllowedMethods: define_method
 Style/SymbolProc:
   Exclude:
     - 'qps/client.rb'
     - 'stress/stress_client.rb'
 
-# Offense count: 6
-# Cop supports --auto-correct.
+# Offense count: 1
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: EnforcedStyleForMultiline.
+# SupportedStylesForMultiline: comma, consistent_comma, no_comma
+Style/TrailingCommaInHashLiteral:
+  Exclude:
+    - 'bin/math_client.rb'
+
+# Offense count: 7
+# This cop supports safe autocorrection (--autocorrect).
 # Configuration parameters: AllowNamedUnderscoreVariables.
 Style/TrailingUnderscoreVariable:
   Exclude:
@@ -543,27 +877,30 @@ Style/TrailingUnderscoreVariable:
     - 'spec/server_credentials_spec.rb'
 
 # Offense count: 3
-# Cop supports --auto-correct.
-# Configuration parameters: ExactNameMatch, AllowPredicates, AllowDSLWriters, IgnoreClassMethods, Whitelist.
-# Whitelist: 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
+# This cop supports safe autocorrection (--autocorrect).
+# 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:
     - 'qps/histogram.rb'
 
-# Offense count: 3
-# Cop supports --auto-correct.
-Style/UnneededInterpolation:
-  Exclude:
-    - 'pb/grpc/health/checker.rb'
-
-# Offense count: 1
-# Cop supports --auto-correct.
-Style/YodaCondition:
+# Offense count: 2
+# This cop supports safe autocorrection (--autocorrect).
+Style/WhileUntilModifier:
   Exclude:
-    - 'stress/stress_client.rb'
+    - 'end2end/end2end_common.rb'
+    - 'qps/proxy-worker.rb'
 
-# Offense count: 2
-# Cop supports --auto-correct.
+# Offense count: 5
+# This cop supports unsafe autocorrection (--autocorrect-all).
 Style/ZeroLengthPredicate:
   Exclude:
+    - 'ext/grpc/extconf.rb'
     - 'lib/grpc/generic/rpc_server.rb'
+
+# Offense count: 46
+# This cop supports safe autocorrection (--autocorrect).
+# Configuration parameters: AllowHeredoc, AllowURI, URISchemes, IgnoreCopDirectives, AllowedPatterns, IgnoredPatterns.
+# URISchemes: http, https
+Layout/LineLength:
+  Max: 186
diff --git a/src/ruby/end2end/grpc_class_init_client.rb b/src/ruby/end2end/grpc_class_init_client.rb
index 44fb031725c..5c67c83452e 100755
--- a/src/ruby/end2end/grpc_class_init_client.rb
+++ b/src/ruby/end2end/grpc_class_init_client.rb
@@ -66,6 +66,7 @@ def run_default_test(test_proc)
   thd.join
 end
 
+# rubocop:disable Metrics/CyclomaticComplexity
 def get_test_proc(grpc_class)
   case grpc_class
   when 'channel'
@@ -117,6 +118,7 @@ def get_test_proc(grpc_class)
     fail "bad --grpc_class=#{grpc_class} param"
   end
 end
+# rubocop:enable Metrics/CyclomaticComplexity
 
 def main
   grpc_class = ''
diff --git a/src/ruby/lib/grpc/generic/bidi_call.rb b/src/ruby/lib/grpc/generic/bidi_call.rb
index cd32f3dac41..f9f0ce7f525 100644
--- a/src/ruby/lib/grpc/generic/bidi_call.rb
+++ b/src/ruby/lib/grpc/generic/bidi_call.rb
@@ -139,6 +139,7 @@ module GRPC
     end
 
     # set_output_stream_done is relevant on client-side
+    # rubocop:disable Metrics/PerceivedComplexity
     def write_loop(requests, is_client: true, set_output_stream_done: nil)
       GRPC.logger.debug('bidi-write-loop: starting')
       count = 0
@@ -182,6 +183,7 @@ module GRPC
     ensure
       set_output_stream_done.call if is_client
     end
+    # rubocop:enable Metrics/PerceivedComplexity
 
     # Provides an enumerator that yields results of remote reads
     def read_loop(set_input_stream_done, is_client: true)
diff --git a/templates/grpc.gemspec.template b/templates/grpc.gemspec.template
index b43727c71c7..b5785b545ba 100644
--- a/templates/grpc.gemspec.template
+++ b/templates/grpc.gemspec.template
@@ -38,12 +38,12 @@
     s.add_development_dependency 'bundler',            '>= 1.9'
     s.add_development_dependency 'facter',             '~> 2.4'
     s.add_development_dependency 'logging',            '~> 2.0'
-    s.add_development_dependency 'simplecov',          '~> 0.14.1'
+    s.add_development_dependency 'simplecov',          '~> 0.22'
     s.add_development_dependency 'rake',               '~> 13.0'
     s.add_development_dependency 'rake-compiler',      '<= 1.1.1'
     s.add_development_dependency 'rake-compiler-dock', '~> 1.2'
     s.add_development_dependency 'rspec',              '~> 3.6'
-    s.add_development_dependency 'rubocop',            '~> 0.49.1'
+    s.add_development_dependency 'rubocop',            '~> 1.41.0'
     s.add_development_dependency 'signet',             '~> 0.7'
     s.add_development_dependency 'googleauth',         '>= 0.5.1', '< 0.10'
 
diff --git a/tools/internal_ci/helper_scripts/prepare_build_linux_ruby_artifact_rc b/tools/internal_ci/helper_scripts/prepare_build_linux_ruby_artifact_rc
index fc9910a04c2..e622d051556 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_linux_ruby_artifact_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_linux_ruby_artifact_rc
@@ -28,10 +28,11 @@ set +ex
 # but we want to exit if there's a failure
 set -e
 
-echo "rvm install ruby-2.5.7"
-time rvm install ruby-2.5.7
-echo "rvm --default use ruby-2.5.7"
-rvm --default use ruby-2.5.7
+RUBY_VERSION=3.2.0
+echo "Installing ruby-${RUBY_VERSION}"
+time rvm install "ruby-${RUBY_VERSION}"
+echo "Setting default ruby version."
+rvm use "$RUBY_VERSION" --default
 
 # restore the original echo and exit on failure behavior
 set -ex
@@ -40,7 +41,7 @@ set -ex
 ruby --version
 
 # Bundler is required for grpc ruby artifact build.
-gem install bundler -v 1.17.3
+gem install bundler -v 2.4
 
 # log gem versions for easier debugging if things go wrong
 gem list || true
diff --git a/tools/internal_ci/helper_scripts/prepare_build_macos_rc b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
index 86026d1007a..7a2f743d821 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_macos_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
@@ -80,13 +80,13 @@ then
   set +x
   source $HOME/.rvm/scripts/rvm
 
-  for RUBY_VERSION in 2.5.0 2.7.0 3.0.0 3.1.0; do
-    echo "Installing ruby-${RUBY_VERSION}"
-    time rvm install "ruby-${RUBY_VERSION}"
-  done;
+  RUBY_VERSION=3.2.0
+  echo "Installing ruby-${RUBY_VERSION}"
+  time rvm install "ruby-${RUBY_VERSION}"
   echo "Setting default ruby version."
-  rvm use 2.7.0 --default
+  rvm use "$RUBY_VERSION" --default
   echo "Updating osx-ssl-certs."
+  gem install bundler -v 2.4
   rvm osx-ssl-certs status all
   rvm osx-ssl-certs update all