diff --git a/.ruby-version b/.ruby-version
index 4f5e697..1454f6e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.4.5
+4.0.1
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..629efd9
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,7 @@
+# Changelog
+
+## [4.3.0] - 2026-02-09
+
+### Dependency updates
+- Updated Ruby to 4.0.2
+- Replace Juweiler dependency with Bundler's built-in gem tasks
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
index 49122fa..3309afa 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,16 +1,16 @@
 source "https://rubygems.org"
 
 gem 'rotp', '~> 6'
-gem 'faraday', '~> 1.0'
+gem 'faraday', '~> 2.14'
 gem 'json', '~> 2.1'
 
 group :development do
+  gem 'rake'
   gem 'byebug', '>= 0'
   gem 'rspec', '>= 0'
   gem 'shoulda', '>= 0'
   gem 'webmock', '>= 0'
   gem 'rdoc', '~> 6.0', '>= 6.0.4'
-  gem 'juwelier', git: 'https://github.com/flajann2/juwelier.git'
   gem 'simplecov', '= 0.16.1'
   gem 'pry-byebug', '~> 3.6'
   gem 'faraday-detailed_logger', '~> 2.1', '>= 2.1.2'
diff --git a/Rakefile b/Rakefile
index 645d9e3..82bb534 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,49 +1,8 @@
-# encoding: utf-8
+# frozen_string_literal: true
 
-require 'rubygems'
-require 'bundler'
-begin
-  Bundler.setup(:default, :development)
-rescue Bundler::BundlerError => e
-  $stderr.puts e.message
-  $stderr.puts "Run `bundle install` to install missing gems"
-  exit e.status_code
-end
-require 'rake'
-
-require 'juwelier'
-Juwelier::Tasks.new do |gem|
-  gem.name = "campact_user_service"
-  gem.homepage = "http://github.com/controlshift/campact_user_service"
-  gem.license = "MIT"
-  gem.summary = %Q{Ruby wrapper for Campact User Service}
-  gem.description = %Q{Ruby wrapper for Campact User Service}
-  gem.email = "hello@controlshiftlabs.com"
-  gem.authors = ["ControlShift"]
-
-  # dependencies defined in Gemfile
-end
-Juwelier::RubygemsDotOrgTasks.new
-
-require 'rspec/core'
+require 'bundler/gem_tasks'
 require 'rspec/core/rake_task'
-RSpec::Core::RakeTask.new(:spec) do |spec|
-  spec.pattern = FileList['spec/**/*_spec.rb']
-end
-
-RSpec::Core::RakeTask.new(:rcov) do |spec|
-  spec.pattern = 'spec/**/*_spec.rb'
-  spec.rcov = true
-end
-
-task :default => :spec
 
-require 'rdoc/task'
-Rake::RDocTask.new do |rdoc|
-  version = File.exist?('VERSION') ? File.read('VERSION') : ""
+RSpec::Core::RakeTask.new(:spec)
 
-  rdoc.rdoc_dir = 'rdoc'
-  rdoc.title = "krautbuster_api #{version}"
-  rdoc.rdoc_files.include('README*')
-  rdoc.rdoc_files.include('lib/**/*.rb')
-end
+task default: :spec
diff --git a/VERSION b/VERSION
index ef8d756..8191138 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-4.2.0
\ No newline at end of file
+4.3.0
\ No newline at end of file
diff --git a/campact_user_service.gemspec b/campact_user_service.gemspec
index b089339..65e3b30 100644
--- a/campact_user_service.gemspec
+++ b/campact_user_service.gemspec
@@ -1,83 +1,44 @@
-# Generated by juwelier
-# DO NOT EDIT THIS FILE DIRECTLY
-# Instead, edit Juwelier::Tasks in Rakefile, and run 'rake gemspec'
-# -*- encoding: utf-8 -*-
-# stub: campact_user_service 4.1.1 ruby lib
+# frozen_string_literal: true
 
-Gem::Specification.new do |s|
-  s.name = "campact_user_service".freeze
-  s.version = "4.1.1"
+Gem::Specification.new do |spec|
+  spec.name = "campact_user_service"
+  spec.version = File.read(File.expand_path("VERSION", __dir__)).strip
+  spec.authors = ["ControlShift"]
+  spec.email = ["talk@controlshiftlabs.com"]
 
-  s.required_rubygems_version = Gem::Requirement.new(">= 0".freeze) if s.respond_to? :required_rubygems_version=
-  s.require_paths = ["lib".freeze]
-  s.authors = ["ControlShift".freeze]
-  s.date = "2022-02-04"
-  s.description = "Ruby wrapper for Campact User Service".freeze
-  s.email = "hello@controlshiftlabs.com".freeze
-  s.extra_rdoc_files = [
-    "LICENSE",
-    "README.md"
-  ]
-  s.files = [
-    ".github/workflows/ci.yml",
-    ".rubocop.yml",
-    ".ruby-gemset",
-    ".ruby-version",
-    "Gemfile",
-    "LICENSE",
-    "README.md",
-    "Rakefile",
-    "VERSION",
-    "campact_user_service.gemspec",
-    "example.rb",
-    "lib/campact_user_service.rb",
-    "lib/campact_user_service/account.rb",
-    "lib/campact_user_service/client.rb",
-    "lib/campact_user_service/response_error.rb",
-    "lib/campact_user_service/session.rb",
-    "spec/account_spec.rb",
-    "spec/campact_user_service_spec.rb",
-    "spec/client_spec.rb",
-    "spec/session_spec.rb",
-    "spec/spec_helper.rb"
-  ]
-  s.homepage = "http://github.com/controlshift/campact_user_service".freeze
-  s.licenses = ["MIT".freeze]
-  s.rubygems_version = "3.2.32".freeze
-  s.summary = "Ruby wrapper for Campact User Service".freeze
+  spec.summary = "Ruby wrapper for Campact User Service"
+  spec.description = "Ruby wrapper for Campact User Service"
+  spec.homepage = "https://github.com/controlshift/campact_user_service"
+  spec.license = "MIT"
+  spec.required_ruby_version = ">= 3.0.0"
 
-  if s.respond_to? :specification_version then
-    s.specification_version = 4
-  end
+  spec.metadata["homepage_uri"] = spec.homepage
+  spec.metadata["source_code_uri"] = spec.homepage
 
-  if s.respond_to? :add_runtime_dependency then
-    s.add_runtime_dependency(%q<rotp>.freeze, ["~> 6"])
-    s.add_runtime_dependency(%q<faraday>.freeze, ["~> 1.0"])
-    s.add_runtime_dependency(%q<json>.freeze, ["~> 2.1"])
-    s.add_development_dependency(%q<byebug>.freeze, [">= 0"])
-    s.add_development_dependency(%q<rspec>.freeze, [">= 0"])
-    s.add_development_dependency(%q<shoulda>.freeze, [">= 0"])
-    s.add_development_dependency(%q<webmock>.freeze, [">= 0"])
-    s.add_development_dependency(%q<rdoc>.freeze, ["~> 6.0", ">= 6.0.4"])
-    s.add_development_dependency(%q<juwelier>.freeze, [">= 0"])
-    s.add_development_dependency(%q<simplecov>.freeze, ["= 0.16.1"])
-    s.add_development_dependency(%q<pry-byebug>.freeze, ["~> 3.6"])
-    s.add_development_dependency(%q<faraday-detailed_logger>.freeze, ["~> 2.1", ">= 2.1.2"])
-    s.add_development_dependency(%q<rubocop>.freeze, [">= 0"])
-  else
-    s.add_dependency(%q<rotp>.freeze, ["~> 6"])
-    s.add_dependency(%q<faraday>.freeze, ["~> 1.0"])
-    s.add_dependency(%q<json>.freeze, ["~> 2.1"])
-    s.add_dependency(%q<byebug>.freeze, [">= 0"])
-    s.add_dependency(%q<rspec>.freeze, [">= 0"])
-    s.add_dependency(%q<shoulda>.freeze, [">= 0"])
-    s.add_dependency(%q<webmock>.freeze, [">= 0"])
-    s.add_dependency(%q<rdoc>.freeze, ["~> 6.0", ">= 6.0.4"])
-    s.add_dependency(%q<juwelier>.freeze, [">= 0"])
-    s.add_dependency(%q<simplecov>.freeze, ["= 0.16.1"])
-    s.add_dependency(%q<pry-byebug>.freeze, ["~> 3.6"])
-    s.add_dependency(%q<faraday-detailed_logger>.freeze, ["~> 2.1", ">= 2.1.2"])
-    s.add_dependency(%q<rubocop>.freeze, [">= 0"])
+  # Specify which files should be added to the gem when it is released.
+  # The `git ls-files -z` loads the files in the RubyGem that have been added into git.
+  spec.files = Dir.chdir(__dir__) do
+    `git ls-files -z`.split("\x0").reject do |f|
+      (File.expand_path(f) == __FILE__) ||
+        f.start_with?(*%w[bin/ spec/ .git .github .idea coverage/])
+    end
   end
+  spec.require_paths = ["lib"]
+
+  # Runtime dependencies
+  spec.add_dependency "faraday", "~> 2.14"
+  spec.add_dependency "json", "~> 2.1"
+  spec.add_dependency "rotp", "~> 6"
+
+  # Development dependencies
+  spec.add_development_dependency "byebug"
+  spec.add_development_dependency "faraday-detailed_logger", "~> 2.1"
+  spec.add_development_dependency "pry-byebug", "~> 3.6"
+  spec.add_development_dependency "rdoc", "~> 6.0"
+  spec.add_development_dependency "rspec"
+  spec.add_development_dependency "rubocop"
+  spec.add_development_dependency "shoulda"
+  spec.add_development_dependency "simplecov", "= 0.16.1"
+  spec.add_development_dependency "webmock"
 end