diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index b8533ad..0de9158 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -12,7 +12,7 @@ jobs:
     - name: Install and set up ruby
       uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 2.4
+        ruby-version: '3.0'
         bundler-cache: true
 
     - name: Rubocop
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 45a98af..2b6b635 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,12 +8,12 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu]
-        ruby: ['2.4', '2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3', '3.4', head, jruby, jruby-head, truffleruby, truffleruby-head]
+        ruby: ['3.0', '3.1', '3.2', '3.3', '3.4', head, jruby, jruby-head, truffleruby, truffleruby-head]
         include:
           - os: macos
-            ruby: '2.6'
+            ruby: '3.0'
           - os: windows
-            ruby: '2.4.10'
+            ruby: '3.0'
     runs-on: ${{ matrix.os }}-latest
     continue-on-error: ${{ endsWith(matrix.ruby, 'head') || matrix.os == 'windows' }}
     steps:
diff --git a/.rubocop.yml b/.rubocop.yml
index 2db80d2..b3efced 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,5 +1,16 @@
+require:
+  - rubocop-performance
+  - rubocop-rake
+
+# Set this to the minimum supported ruby in the gemspec. Otherwise
+# we get errors if our ruby version doesn't match.
 AllCops:
-  TargetRubyVersion: 2.4
+  SuggestExtensions: false
+  TargetRubyVersion: 3.0
+  NewCops: enable
+
+Gemspec/DevelopmentDependencies:
+  EnforcedStyle: gemspec
 
 Layout/LineLength:
   Max: 120
diff --git a/.simplecov b/.simplecov
index 611a952..91415df 100644
--- a/.simplecov
+++ b/.simplecov
@@ -17,6 +17,6 @@ SimpleCov.formatter = SimpleCov::Formatter::MultiFormatter.new(
 )
 
 SimpleCov.start do
-  # enable_coverage :branch   <-- Re-enable this when we move to ruby ~> 2.5.
+  enable_coverage :branch
   add_filter ['/test/', '/samples/']
 end
diff --git a/Changelog.md b/Changelog.md
index 9447446..c81da15 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -1,4 +1,6 @@
-# X.X.X (Next)
+# 2.0.0 (Next)
+
+# 1.0.0 (2025-02-07)
 
 * Fix automatic require
 * Fix the Libbz2::finalizer method.
diff --git a/Rakefile b/Rakefile
index 4caa98e..8bd2b55 100644
--- a/Rakefile
+++ b/Rakefile
@@ -2,6 +2,9 @@
 
 require 'bundler/gem_tasks'
 require 'rake/testtask'
+require 'rubocop/rake_task'
+
+task default: :test
 
 Rake::TestTask.new(:test) do |t|
   t.libs << 'test'
@@ -9,4 +12,4 @@ Rake::TestTask.new(:test) do |t|
   t.test_files = FileList['test/**/*_test.rb']
 end
 
-task default: :test
+RuboCop::RakeTask.new
diff --git a/lib/zip/bzip2.rb b/lib/zip/bzip2.rb
index ed697bd..69afc08 100644
--- a/lib/zip/bzip2.rb
+++ b/lib/zip/bzip2.rb
@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
 require 'zip'
-require 'zip/bzip2/version'
-require 'zip/bzip2/decompressor'
+require_relative 'bzip2/version'
+require_relative 'bzip2/decompressor'
 
 module Zip
   # The Zip::Bzip2 module extends Rubyzip with support for the bzip2 compression method.
diff --git a/lib/zip/bzip2/decompress.rb b/lib/zip/bzip2/decompress.rb
index 278091c..9833a56 100644
--- a/lib/zip/bzip2/decompress.rb
+++ b/lib/zip/bzip2/decompress.rb
@@ -1,24 +1,24 @@
 # frozen_string_literal: true
 
-require 'zip/bzip2/libbz2'
+require_relative 'libbz2'
 
 module Zip
   module Bzip2
-    class Decompress #:nodoc:
+    class Decompress # :nodoc:
       OUTPUT_BUFFER_SIZE = 4096
 
       def initialize(options = {})
         small = options[:small]
 
         @libbz2 = Libbz2.new.tap do |libbz2|
-          libbz2.decompress_init!(small)
+          libbz2.decompress_init!(small: small)
         end
 
         @finished = false
       end
 
       def decompress(data)
-        result = ''.dup
+        result = +''
 
         with_input_buffer(data) do |input_buffer|
           @libbz2.input_buffer = input_buffer
diff --git a/lib/zip/bzip2/decompressor.rb b/lib/zip/bzip2/decompressor.rb
index 0e19e68..a64ba30 100644
--- a/lib/zip/bzip2/decompressor.rb
+++ b/lib/zip/bzip2/decompressor.rb
@@ -1,19 +1,18 @@
 # frozen_string_literal: true
 
-require 'zip'
-require 'zip/bzip2/decompress'
+require_relative 'decompress'
 
-module Zip #:nodoc:
+module Zip # :nodoc:
   module Bzip2
-    class Decompressor < ::Zip::Decompressor #:nodoc:
+    class Decompressor < ::Zip::Decompressor # :nodoc:
       def initialize(*args)
         super
 
-        @buffer = ''.dup
+        @buffer = +''
         @bzip2_ffi_decompressor = ::Zip::Bzip2::Decompress.new
       end
 
-      def read(length = nil, outbuf = ''.dup)
+      def read(length = nil, outbuf = +'')
         return return_value_on_eof(length) if eof
 
         fill_buffer(length)
@@ -30,7 +29,7 @@ def eof
       private
 
       def return_value_on_eof(length)
-        return '' if length.nil? || length.zero?
+        '' if length.nil? || length.zero?
       end
 
       def fill_buffer(min_length)
diff --git a/lib/zip/bzip2/errors.rb b/lib/zip/bzip2/errors.rb
index 6e11c52..8c15c77 100644
--- a/lib/zip/bzip2/errors.rb
+++ b/lib/zip/bzip2/errors.rb
@@ -11,7 +11,7 @@ class MemError < Error
       # Initializes a new instance of MemError.
       #
       # @private
-      def initialize #:nodoc:
+      def initialize # :nodoc:
         super('Could not allocate enough memory to perform this request')
       end
     end
@@ -23,10 +23,10 @@ class DataError < Error
       #
       # @param message [String] Exception message (overrides the default).
       # @private
-      def initialize(message = nil) #:nodoc:
+      def initialize(message = nil) # :nodoc:
         super(
           message ||
-            'Data integrity error detected (mismatch between stored and computed CRCs, '\
+            'Data integrity error detected (mismatch between stored and computed CRCs, ' \
             'or other anomaly in the compressed data)',
         )
       end
@@ -38,7 +38,7 @@ class MagicDataError < DataError
       # Initializes a new instance of MagicDataError.
       #
       # @private
-      def initialize #:nodoc:
+      def initialize # :nodoc:
         super('Compressed data does not start with the correct magic bytes (\'BZh\')')
       end
     end
@@ -48,7 +48,7 @@ class ConfigError < DataError
       # Initializes a new instance of ConfigError.
       #
       # @private
-      def initialize #:nodoc:
+      def initialize # :nodoc:
         super('libbz2 has been improperly compiled on your platform')
       end
     end
@@ -59,7 +59,7 @@ class UnexpectedError < Error
       #
       # @param error_code [Integer] The error_code reported by libbz2.
       # @private
-      def initialize(error_code) #:nodoc:
+      def initialize(error_code) # :nodoc:
         super("An unexpected error was detected (error code: #{error_code})")
       end
     end
diff --git a/lib/zip/bzip2/ffi/libbz2.rb b/lib/zip/bzip2/ffi/libbz2.rb
index 0352201..04d69ba 100644
--- a/lib/zip/bzip2/ffi/libbz2.rb
+++ b/lib/zip/bzip2/ffi/libbz2.rb
@@ -34,7 +34,7 @@ module FFI
       # See bzlib.h and http://bzip.org/docs.html.
       #
       # @private
-      module Libbz2 #:nodoc:
+      module Libbz2 # :nodoc:
         extend ::FFI::Library
 
         ffi_lib ['bz2', 'libbz2.so.1', 'libbz2.dll']
@@ -62,7 +62,7 @@ module Libbz2 #:nodoc:
         callback :bzfree, %i[pointer pointer], :void
 
         # typedef struct { ... } bz_stream;
-        class BzStream < ::FFI::Struct #:nodoc:
+        class BzStream < ::FFI::Struct # :nodoc:
           layout :next_in,       :pointer,
                  :avail_in,      :uint,
                  :total_in_lo32, :uint,
diff --git a/lib/zip/bzip2/libbz2.rb b/lib/zip/bzip2/libbz2.rb
index 42ad397..9762368 100644
--- a/lib/zip/bzip2/libbz2.rb
+++ b/lib/zip/bzip2/libbz2.rb
@@ -1,12 +1,11 @@
 # frozen_string_literal: true
 
-require 'ffi'
-require 'zip/bzip2/errors'
-require 'zip/bzip2/ffi/libbz2'
+require_relative 'errors'
+require_relative 'ffi/libbz2'
 
 module Zip
   module Bzip2
-    class Libbz2 #:nodoc:
+    class Libbz2 # :nodoc:
       def self.finalizer(stream)
         lambda do |_id|
           FFI::Libbz2::BZ2_bzDecompressEnd(stream)
@@ -28,7 +27,7 @@ def initialize
         @stream = FFI::Libbz2::BzStream.new
       end
 
-      def decompress_init!(small = false)
+      def decompress_init!(small: false)
         result = FFI::Libbz2::BZ2_bzDecompressInit(@stream, 0, small ? 1 : 0)
         check_error(result)
 
diff --git a/lib/zip/bzip2/version.rb b/lib/zip/bzip2/version.rb
index eefc9fe..ec1f7b1 100644
--- a/lib/zip/bzip2/version.rb
+++ b/lib/zip/bzip2/version.rb
@@ -2,6 +2,6 @@
 
 module Zip
   module Bzip2
-    VERSION = '1.0.0'
+    VERSION = '2.0.0'
   end
 end
diff --git a/rubyzip-bzip2.gemspec b/rubyzip-bzip2.gemspec
index 87eaa69..9f0eea3 100644
--- a/rubyzip-bzip2.gemspec
+++ b/rubyzip-bzip2.gemspec
@@ -1,25 +1,23 @@
 # frozen_string_literal: true
 
-lib = File.expand_path('lib', __dir__)
-$LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
-require 'zip/bzip2/version'
+require_relative 'lib/zip/bzip2/version'
 
 Gem::Specification.new do |spec|
   spec.name = 'rubyzip-bzip2'
-  spec.version = ::Zip::Bzip2::VERSION
+  spec.version = Zip::Bzip2::VERSION
   spec.authors = [
     'Jan-Joost Spanjers', 'Robert Haines'
   ]
 
   spec.summary = 'Extension of rubyzip to read bzip2 compressed files'
   spec.description =
-    'The rubyzip-bzip2 gem provides an extension of the rubyzip gem '\
+    'The rubyzip-bzip2 gem provides an extension of the rubyzip gem ' \
     'for reading zip files compressed with bzip2 compression'
   spec.homepage = 'http://github.com/rubyzip/rubyzip-bzip2'
   spec.license = 'BSD 2-Clause'
   spec.require_paths = ['lib']
 
-  spec.required_ruby_version = '>= 2.4'
+  spec.required_ruby_version = '>= 3.0'
 
   spec.files = `git ls-files -z`.split("\x0").reject do |f|
     f.match(%r{^(test|spec|features)/})
@@ -35,11 +33,13 @@ Gem::Specification.new do |spec|
   }
 
   spec.add_dependency 'ffi', '~> 1.0'
-  spec.add_dependency 'rubyzip', '~> 2.4', '< 3.0'
+  spec.add_dependency 'rubyzip', '~> 3.0.0.rc2'
 
   spec.add_development_dependency 'minitest', '~> 5.15'
   spec.add_development_dependency 'rake', '~> 13.2'
-  spec.add_development_dependency 'rubocop', '~> 0.79.0'
+  spec.add_development_dependency 'rubocop', '~> 1.61.0'
+  spec.add_development_dependency 'rubocop-performance', '~> 1.20.0'
+  spec.add_development_dependency 'rubocop-rake', '~> 0.6.0'
   spec.add_development_dependency 'simplecov', '~> 0.18.0'
   spec.add_development_dependency 'simplecov-lcov', '~> 0.8'
 end
diff --git a/test/integration/zip_file_bzip2_support_test.rb b/test/integration/zip_file_bzip2_support_test.rb
index 568eb45..3ae2f24 100644
--- a/test/integration/zip_file_bzip2_support_test.rb
+++ b/test/integration/zip_file_bzip2_support_test.rb
@@ -17,10 +17,10 @@ def test_file_read
   private
 
   def file1_text
-    @file1_text ||= File.open(FILE1, 'r').read
+    @file1_text ||= File.read(FILE1)
   end
 
   def file2_text
-    @file2_text ||= File.open(FILE2, 'r').read
+    @file2_text ||= File.read(FILE2)
   end
 end
diff --git a/test/integration/zip_input_stream_bzip2_support_test.rb b/test/integration/zip_input_stream_bzip2_support_test.rb
index a2d4aa9..71941bd 100644
--- a/test/integration/zip_input_stream_bzip2_support_test.rb
+++ b/test/integration/zip_input_stream_bzip2_support_test.rb
@@ -20,7 +20,9 @@ def test_input_stream_read
   end
 
   def test_input_stream_encrypted_read
-    Zip::InputStream.open(BZIP2_ZIP_FILE_ENCRYPTED, 0, Zip::TraditionalDecrypter.new(PASSWORD)) do |zis|
+    decrypter = Zip::TraditionalDecrypter.new(PASSWORD)
+
+    Zip::InputStream.open(BZIP2_ZIP_FILE_ENCRYPTED, decrypter: decrypter) do |zis|
       zis.get_next_entry
       assert_equal file1_text, zis.read
 
@@ -32,10 +34,10 @@ def test_input_stream_encrypted_read
   private
 
   def file1_text
-    @file1_text ||= File.open(FILE1, 'r').read
+    @file1_text ||= File.read(FILE1)
   end
 
   def file2_text
-    @file2_text ||= File.open(FILE2, 'r').read
+    @file2_text ||= File.read(FILE2)
   end
 end
diff --git a/test/models/zip/bzip2/decompress_test.rb b/test/models/zip/bzip2/decompress_test.rb
index e3ca4a7..c6b425c 100644
--- a/test/models/zip/bzip2/decompress_test.rb
+++ b/test/models/zip/bzip2/decompress_test.rb
@@ -43,10 +43,10 @@ def test_decompress_with_corrupted_input
   private
 
   def file_text
-    @file_text ||= File.open(FILE, &:read)
+    @file_text ||= File.read(FILE)
   end
 
   def compressed_data
-    @compressed_data ||= File.open(BZIP2_FILE, 'rb', &:read)
+    @compressed_data ||= File.binread(BZIP2_FILE)
   end
 end
diff --git a/test/models/zip/bzip2/decompressor_test.rb b/test/models/zip/bzip2/decompressor_test.rb
index c015427..92f6a05 100644
--- a/test/models/zip/bzip2/decompressor_test.rb
+++ b/test/models/zip/bzip2/decompressor_test.rb
@@ -39,6 +39,6 @@ def test_data_error
   private
 
   def test_text
-    @test_text ||= File.open(FILE1, &:read)
+    @test_text ||= File.read(FILE1)
   end
 end
diff --git a/test/models/zip/bzip2/libbz2_test.rb b/test/models/zip/bzip2/libbz2_test.rb
index 30aecff..85dfed6 100644
--- a/test/models/zip/bzip2/libbz2_test.rb
+++ b/test/models/zip/bzip2/libbz2_test.rb
@@ -74,10 +74,10 @@ def decompress(data)
   end
 
   def file_text
-    @file_text ||= File.open(FILE, &:read)
+    @file_text ||= File.read(FILE)
   end
 
   def compressed_data
-    @compressed_data ||= File.open(BZIP2_FILE, 'rb', &:read)
+    @compressed_data ||= File.binread(BZIP2_FILE)
   end
 end