diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index e6d2b8e..04fce4b 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -19,13 +19,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        rspec-minor-versions: [6, 7, 8, 9, 10, 11, 12, 13]
+        rspec-minor-versions: [8, 9, 10, 11, 12, 13]
         ruby-versions: ["3.2", "3.3", "3.4", "4.0"]
-        exclude:
-          - ruby-versions: 4.0
-            rspec-minor-versions: 6
-          - ruby-versions: 4.0
-            rspec-minor-versions: 7
     env:
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/rspec_3.${{ matrix.rspec-minor-versions }}.gemfile
 
diff --git a/.rubocop.yml b/.rubocop.yml
index 9b340e9..a972280 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -15,7 +15,7 @@ plugins:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 2.6
+  TargetRubyVersion: 3.2
   Exclude:
     - tmp/**/*
     - vendor/**/*
diff --git a/Appraisals b/Appraisals
index 466579c..44665e0 100644
--- a/Appraisals
+++ b/Appraisals
@@ -1,6 +1,6 @@
 # vim: ft=ruby
 
-(6..13).each do |minor|
+(8..13).each do |minor|
   appraise "rspec 3.#{minor}" do
     gem 'rspec', "3.#{minor}.0"
   end
diff --git a/features/step_definitions/flatware_steps.rb b/features/step_definitions/flatware_steps.rb
index 5edd39d..ae263a6 100644
--- a/features/step_definitions/flatware_steps.rb
+++ b/features/step_definitions/flatware_steps.rb
@@ -28,8 +28,8 @@ def flatware_process
     all_commands.find { |command| command.commandline.include? 'flatware' }
   end
 
-  def duration(&block)
-    Benchmark.realtime(&block)
+  def duration(&)
+    Benchmark.realtime(&)
   end
 end
 World(Support)
diff --git a/flatware-rspec.gemspec b/flatware-rspec.gemspec
index dad20c2..8422dbf 100644
--- a/flatware-rspec.gemspec
+++ b/flatware-rspec.gemspec
@@ -24,6 +24,6 @@ Gem::Specification.new do |s|
   s.required_ruby_version = ['>= 3.2', '< 4.1']
   s.require_paths = ['lib']
   s.add_dependency %(flatware), Flatware::VERSION
-  s.add_dependency %(rspec), '>= 3.6'
+  s.add_dependency %(rspec), '>= 3.8'
   # s.metadata['rubygems_mfa_required'] = 'true'
 end
diff --git a/lib/flatware/configuration.rb b/lib/flatware/configuration.rb
index 7686ab2..9d7b0db 100644
--- a/lib/flatware/configuration.rb
+++ b/lib/flatware/configuration.rb
@@ -34,7 +34,7 @@ def configuration
     @configuration ||= Configuration.new
   end
 
-  def configure(&_block)
+  def configure(&)
     yield configuration
   end
 end
diff --git a/lib/flatware/cucumber/formatter.rb b/lib/flatware/cucumber/formatter.rb
index 8b7bb0e..b1dd7bc 100644
--- a/lib/flatware/cucumber/formatter.rb
+++ b/lib/flatware/cucumber/formatter.rb
@@ -1,7 +1,6 @@
 require 'cucumber'
 require 'flatware/sink'
 require 'ostruct'
-require 'set'
 
 module Flatware
   module Cucumber
diff --git a/lib/flatware/cucumber/result.rb b/lib/flatware/cucumber/result.rb
index 75acc86..a963459 100644
--- a/lib/flatware/cucumber/result.rb
+++ b/lib/flatware/cucumber/result.rb
@@ -9,8 +9,8 @@ def initialize(progress)
       end
 
       class << self
-        def step(*args)
-          step = StepResult.new(*args)
+        def step(*)
+          step = StepResult.new(*)
           new step.progress, [step]
         end
 
diff --git a/lib/flatware/sink.rb b/lib/flatware/sink.rb
index 2227ac8..a8301ec 100644
--- a/lib/flatware/sink.rb
+++ b/lib/flatware/sink.rb
@@ -1,5 +1,4 @@
 require 'drb/drb'
-require 'set'
 require 'flatware/sink/signal'
 
 module Flatware
@@ -62,10 +61,10 @@ def finished(job)
         check_finished!
       end
 
-      def method_missing(name, *args)
+      def method_missing(name, *)
         super unless formatter.respond_to?(name)
-        Flatware.log(name, *args)
-        formatter.send(name, *args)
+        Flatware.log(name, *)
+        formatter.send(name, *)
       end
 
       def respond_to_missing?(name, include_all)
diff --git a/lib/flatware/sink/signal.rb b/lib/flatware/sink/signal.rb
index 28b958c..e2f75bd 100644
--- a/lib/flatware/sink/signal.rb
+++ b/lib/flatware/sink/signal.rb
@@ -23,8 +23,8 @@ def listen
         self
       end
 
-      def self.listen(formatter, &block)
-        new(formatter, &block).listen
+      def self.listen(formatter, &)
+        new(formatter, &).listen
       end
 
       private
diff --git a/spec/spec_helper.rb b/spec/spec_helper.rb
index 47b1915..7d16a06 100644
--- a/spec/spec_helper.rb
+++ b/spec/spec_helper.rb
@@ -6,7 +6,6 @@
 # Requires supporting files with custom matchers and macros, etc,
 # in ./support/ and its subdirectories.
 Dir[Pathname(__FILE__).dirname.join('support/**/*.rb')]
-  .sort
   .each { |f| require f }
 
 RSpec.configure do |config|