diff --git a/.circleci/gemspecs/compatible b/.circleci/gemspecs/compatible
index c1dc16c..be25121 100644
--- a/.circleci/gemspecs/compatible
+++ b/.circleci/gemspecs/compatible
@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.files = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.require_paths = %w[lib]
 
-  spec.add_runtime_dependency 'net-smtp', '~> 0.4.0.1' if ::Gem::Version.new(::RUBY_VERSION) >= ::Gem::Version.new('3.1.0')
+  spec.add_runtime_dependency 'net-smtp', '~> 0.5.0' if ::Gem::Version.new(::RUBY_VERSION) >= ::Gem::Version.new('3.1.0')
   spec.add_runtime_dependency 'simpleidn', '~> 0.2.1'
 
   spec.add_development_dependency 'dns_mock'
diff --git a/.circleci/gemspecs/latest b/.circleci/gemspecs/latest
index c28f4a7..1276981 100644
--- a/.circleci/gemspecs/latest
+++ b/.circleci/gemspecs/latest
@@ -16,23 +16,23 @@ Gem::Specification.new do |spec|
   spec.files = `git ls-files -z`.split("\x0").reject { |f| f.match(%r{^(test|spec|features)/}) }
   spec.require_paths = %w[lib]
 
-  spec.add_runtime_dependency 'net-smtp', '~> 0.4.0.1'
+  spec.add_runtime_dependency 'net-smtp', '~> 0.5.0'
   spec.add_runtime_dependency 'simpleidn', '~> 0.2.1'
 
   spec.add_development_dependency 'bundler-audit', '~> 0.9.1'
-  spec.add_development_dependency 'dns_mock', '~> 1.6', '>= 1.6.2'
+  spec.add_development_dependency 'dns_mock', '~> 1.7', '>= 1.7.1'
   spec.add_development_dependency 'fasterer', '~> 0.11.0'
   spec.add_development_dependency 'ffaker', '~> 2.23'
   spec.add_development_dependency 'json_matchers', '~> 0.11.1'
   spec.add_development_dependency 'pry-byebug', '~> 3.10', '>= 3.10.1'
-  spec.add_development_dependency 'rake', '~> 13.1'
+  spec.add_development_dependency 'rake', '~> 13.2', '>= 13.2.1'
   spec.add_development_dependency 'reek', '~> 6.3'
   spec.add_development_dependency 'rspec', '~> 3.13'
-  spec.add_development_dependency 'rubocop', '~> 1.60', '>= 1.60.2'
-  spec.add_development_dependency 'rubocop-performance', '~> 1.20', '>= 1.20.2'
-  spec.add_development_dependency 'rubocop-rspec', '~> 2.26', '>= 2.26.1'
+  spec.add_development_dependency 'rubocop', '~> 1.63', '>= 1.63.2'
+  spec.add_development_dependency 'rubocop-performance', '~> 1.21'
+  spec.add_development_dependency 'rubocop-rspec', '~> 2.29', '>= 2.29.1'
   spec.add_development_dependency 'simplecov', '~> 0.22.0'
-  spec.add_development_dependency 'smtp_mock', '~> 1.4'
+  spec.add_development_dependency 'smtp_mock', '~> 1.4', '>= 1.4.1'
   spec.add_development_dependency 'truemail-rspec', '~> 1.3', '>= 1.3.1'
-  spec.add_development_dependency 'webmock', '~> 3.22'
+  spec.add_development_dependency 'webmock', '~> 3.23'
 end
diff --git a/.circleci/linter_configs/.rubocop.yml b/.circleci/linter_configs/.rubocop.yml
index 1c13781..d04d04f 100644
--- a/.circleci/linter_configs/.rubocop.yml
+++ b/.circleci/linter_configs/.rubocop.yml
@@ -142,3 +142,6 @@ RSpec/VerifiedDoubleReference:
 
 RSpec/IndexedLet:
   Enabled: false
+
+RSpec/IsExpectedSpecify:
+  Enabled: false
diff --git a/.codeclimate.yml b/.codeclimate.yml
index 0ca156c..9ad6043 100644
--- a/.codeclimate.yml
+++ b/.codeclimate.yml
@@ -9,7 +9,7 @@ checks:
 plugins:
   rubocop:
     enabled: true
-    channel: rubocop-1-60
+    channel: rubocop-1-63
     config:
       file: .circleci/linter_configs/.rubocop.yml
 
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a4b635a..6c34118 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,14 @@
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.3.1] - 2024.04.23
+
+### Updated
+
+- Updated runtime/development dependencies
+- Updated `codeclimate`/`reek` configs
+- Updated gem version
+
 ## [3.3.0] - 2024.02.26
 
 ### Added
diff --git a/lib/truemail/version.rb b/lib/truemail/version.rb
index c793413..b771ecc 100644
--- a/lib/truemail/version.rb
+++ b/lib/truemail/version.rb
@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module Truemail
-  VERSION = '3.3.0'
+  VERSION = '3.3.1'
 end
diff --git a/truemail.gemspec b/truemail.gemspec
index a6e04eb..be96ced 100644
--- a/truemail.gemspec
+++ b/truemail.gemspec
@@ -29,15 +29,15 @@ Gem::Specification.new do |spec|
   spec.files = `git ls-files -z`.split("\x0").select { |f| f.match(%r{^(bin|lib)/|.ruby-version|truemail.gemspec|LICENSE}) }
   spec.require_paths = %w[lib]
 
-  spec.add_runtime_dependency 'net-smtp', '~> 0.4.0.1' if current_ruby_version >= ::Gem::Version.new('3.1.0')
+  spec.add_runtime_dependency 'net-smtp', '~> 0.5.0' if current_ruby_version >= ::Gem::Version.new('3.1.0')
   spec.add_runtime_dependency 'simpleidn', '~> 0.2.1'
 
-  spec.add_development_dependency 'dns_mock', '~> 1.6', '>= 1.6.2'
+  spec.add_development_dependency 'dns_mock', '~> 1.7', '>= 1.7.1'
   spec.add_development_dependency 'ffaker', ffaker_version
   spec.add_development_dependency 'json_matchers', '~> 0.11.1'
-  spec.add_development_dependency 'rake', '~> 13.1'
+  spec.add_development_dependency 'rake', '~> 13.2', '>= 13.2.1'
   spec.add_development_dependency 'rspec', '~> 3.13'
-  spec.add_development_dependency 'smtp_mock', '~> 1.4'
+  spec.add_development_dependency 'smtp_mock', '~> 1.4', '>= 1.4.1'
   spec.add_development_dependency 'truemail-rspec', '~> 1.3', '>= 1.3.1'
-  spec.add_development_dependency 'webmock', '~> 3.20'
+  spec.add_development_dependency 'webmock', '~> 3.23'
 end