diff --git a/.rubocop.yml b/.rubocop.yml
index 9909d8e..ea9207d 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,8 +1,9 @@
 ---
 require:
-  - chefstyle
+  - cookstyle/chefstyle
 
 AllCops:
+  TargetRubyVersion: 3.1
   Include:
     - "**/*.rb"
   Exclude:
diff --git a/CODEOWNERS b/CODEOWNERS
new file mode 100644
index 0000000..b7175b0
--- /dev/null
+++ b/CODEOWNERS
@@ -0,0 +1 @@
+@test-kitchen/maintainers
diff --git a/Gemfile b/Gemfile
index b7f5109..8eb5922 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,5 @@
 source "https://rubygems.org"
 
-# Specify your gem's dependencies in kitchen-dokken.gemspec
 gemspec
 
 group :test do
@@ -11,9 +10,8 @@ end
 
 group :development do
   gem "pry"
-  gem "pry-byebug"
 end
 
-group :chefstyle do
-  gem "chefstyle", "2.2.3"
+group :linting do
+  gem "cookstyle", "7.32.8"
 end
diff --git a/Rakefile b/Rakefile
index 062d545..d541a04 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,9 +1,13 @@
 require "bundler/gem_tasks"
-require "chefstyle"
-require "rubocop/rake_task"
 
-RuboCop::RakeTask.new(:style) do |task|
-  task.options += ["--display-cop-names", "--no-color"]
+begin
+  require "cookstyle/chefstyle"
+  require "rubocop/rake_task"
+  RuboCop::RakeTask.new(:style) do |task|
+    task.options += ["--display-cop-names", "--no-color"]
+  end
+rescue LoadError
+  puts "cookstyle/chefstyle is not available. (sudo) gem install cookstyle to do style checking."
 end
 
 task default: %i{style}
diff --git a/kitchen-dokken.gemspec b/kitchen-dokken.gemspec
index 3e6fd07..25b3122 100644
--- a/kitchen-dokken.gemspec
+++ b/kitchen-dokken.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.files         = %w{LICENSE kitchen-dokken.gemspec Gemfile Rakefile} + Dir.glob("lib/**/*")
   spec.require_paths = ["lib"]
 
-  spec.required_ruby_version = ">= 2.7"
+  spec.required_ruby_version = ">= 3.1"
 
   spec.add_dependency "docker-api", ">= 1.33", "< 3"
   spec.add_dependency "lockfile", "~> 2.1"
diff --git a/lib/kitchen/driver/dokken.rb b/lib/kitchen/driver/dokken.rb
index bafdb69..63d39d5 100644
--- a/lib/kitchen/driver/dokken.rb
+++ b/lib/kitchen/driver/dokken.rb
@@ -465,7 +465,7 @@ def docker_config_creds
               next if v["auth"].nil?
 
               username, password = Base64.decode64(v["auth"]).split(":")
-              @docker_config_creds[k] = { serveraddress: k, username: username, password: password }
+              @docker_config_creds[k] = { serveraddress: k, username:, password: }
             end
           end
 
diff --git a/lib/kitchen/transport/dokken.rb b/lib/kitchen/transport/dokken.rb
index 9e0b75e..f2d8f93 100644
--- a/lib/kitchen/transport/dokken.rb
+++ b/lib/kitchen/transport/dokken.rb
@@ -165,11 +165,11 @@ def upload(locals, remote)
             debug "Rsync is not installed. Falling back to SCP."
             locals.each do |local|
               Net::SCP.upload!(ssh_ip,
-                               "root",
-                               local,
-                               remote,
-                               recursive: true,
-                               ssh: { port: ssh_port, keys: ["#{tmpdir}/id_rsa"] })
+                "root",
+                local,
+                remote,
+                recursive: true,
+                ssh: { port: ssh_port, keys: ["#{tmpdir}/id_rsa"] })
             end
           end
         end
diff --git a/test/cookbooks/dokken_test/recipes/default.rb b/test/cookbooks/dokken_test/recipes/default.rb
index 34a90c3..527dcd5 100644
--- a/test/cookbooks/dokken_test/recipes/default.rb
+++ b/test/cookbooks/dokken_test/recipes/default.rb
@@ -57,9 +57,9 @@
   user "notroot"
   live_stream true
   environment "PATH" => "/usr/bin:/usr/local/bin:/home/notroot/bin",
-              "HOME" => "/home/notroot",
-              "DOCKER_HOST" => "tcp://127.0.0.1:2375",
-              "CHEF_LICENSE" => "accept-no-persist"
+    "HOME" => "/home/notroot",
+    "DOCKER_HOST" => "tcp://127.0.0.1:2375",
+    "CHEF_LICENSE" => "accept-no-persist"
   action :run
 end
 
@@ -69,8 +69,8 @@
   user "notroot"
   live_stream true
   environment "PATH" => "/usr/bin:/usr/local/bin:/home/notroot/bin",
-              "HOME" => "/home/notroot",
-              "DOCKER_HOST" => "tcp://127.0.0.1:2375"
+    "HOME" => "/home/notroot",
+    "DOCKER_HOST" => "tcp://127.0.0.1:2375"
   action :run
 end
 
@@ -87,8 +87,8 @@
   user "notroot"
   live_stream true
   environment "PATH" => "/usr/bin:/usr/local/bin:/home/notroot/bin",
-              "HOME" => "/home/notroot",
-              "DOCKER_HOST" => "tcp://127.0.0.1:2375",
-              "CHEF_LICENSE" => "accept-no-persist"
+    "HOME" => "/home/notroot",
+    "DOCKER_HOST" => "tcp://127.0.0.1:2375",
+    "CHEF_LICENSE" => "accept-no-persist"
   action :run
 end