diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 927e273..0ba0e48 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: '2.6'
+        ruby-version: '3.0'
         bundler-cache: true
 
     - name: Rubocop
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 386de7a..46117a0 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -8,10 +8,10 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu]
-        ruby: ['2.5', '2.6', '2.7', '3.0', '3.1', '3.2', '3.3', head, jruby, jruby-head, truffleruby, truffleruby-head]
+        ruby: ['3.0', '3.1', '3.2', '3.3', head, jruby, jruby-head, truffleruby, truffleruby-head]
         include:
-          - { os: macos  , ruby: '2.5' }
-          - { os: windows, ruby: '2.5' }
+          - { os: macos  , ruby: '3.0' }
+          - { os: windows, ruby: '3.0' }
           # head builds
           - { os: windows, ruby: ucrt  }
           - { os: windows, ruby: mswin }
diff --git a/.rubocop.yml b/.rubocop.yml
index 056c516..49bed3d 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -8,7 +8,7 @@ inherit_from: .rubocop_todo.yml
 # we get errors if our ruby version doesn't match.
 AllCops:
   SuggestExtensions: false
-  TargetRubyVersion: 2.5
+  TargetRubyVersion: 3.0
   NewCops: enable
 
 # Allow this in this file because adding the extra lines is pointless.
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index 2b3f89b..ff5238c 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -6,6 +6,9 @@
 # Note that changes in the inspected code, or installation of new
 # versions of RuboCop, may require this file to be generated again.
 
+Gemspec/DevelopmentDependencies:
+  Enabled: false
+
 # Offense count: 7
 Lint/MissingSuper:
   Exclude:
diff --git a/Rakefile b/Rakefile
index 7329902..f1e8147 100644
--- a/Rakefile
+++ b/Rakefile
@@ -19,7 +19,7 @@ RDoc::Task.new do |rdoc|
   rdoc.rdoc_files.include('README.md', 'lib/**/*.rb')
   rdoc.options << '--markup=markdown'
   rdoc.options << '--tab-width=2'
-  rdoc.options << "-t Rubyzip version #{::Zip::VERSION}"
+  rdoc.options << "-t Rubyzip version #{Zip::VERSION}"
 end
 
 RuboCop::RakeTask.new
diff --git a/lib/zip.rb b/lib/zip.rb
index b2ccc67..5d42122 100644
--- a/lib/zip.rb
+++ b/lib/zip.rb
@@ -65,7 +65,7 @@ module Zip
     @on_exists_proc = false
     @continue_on_exists_proc = false
     @sort_entries = false
-    @default_compression = ::Zlib::DEFAULT_COMPRESSION
+    @default_compression = Zlib::DEFAULT_COMPRESSION
     @write_zip64_support = true
     @warn_invalid_date = true
     @case_insensitive_match = false
diff --git a/lib/zip/central_directory.rb b/lib/zip/central_directory.rb
index 53d213f..61be6fd 100644
--- a/lib/zip/central_directory.rb
+++ b/lib/zip/central_directory.rb
@@ -28,7 +28,7 @@ module Zip
 
     mark_dirty :<<, :comment=, :delete
 
-    def initialize(entries = EntrySet.new, comment = '') #:nodoc:
+    def initialize(entries = EntrySet.new, comment = '') # :nodoc:
       super(dirty_on_create: false)
       @entry_set = entries.kind_of?(EntrySet) ? entries : EntrySet.new(entries)
       @comment   = comment
@@ -39,7 +39,7 @@ module Zip
       read_central_directory_entries(io)
     end
 
-    def write_to_stream(io) #:nodoc:
+    def write_to_stream(io) # :nodoc:
       cdir_offset = io.tell
       @entry_set.each { |entry| entry.write_c_dir_entry(io) }
       eocd_offset = io.tell
@@ -61,7 +61,7 @@ module Zip
       @size
     end
 
-    def ==(other) #:nodoc:
+    def ==(other) # :nodoc:
       return false unless other.kind_of?(CentralDirectory)
 
       @entry_set.entries.sort == other.entries.sort && comment == other.comment
@@ -69,7 +69,7 @@ module Zip
 
     private
 
-    def write_e_o_c_d(io, offset, cdir_size) #:nodoc:
+    def write_e_o_c_d(io, offset, cdir_size) # :nodoc:
       tmp = [
         END_OF_CD_SIG,
         0, # @numberOfThisDisk
@@ -84,7 +84,7 @@ module Zip
       io << @comment
     end
 
-    def write_64_e_o_c_d(io, offset, cdir_size) #:nodoc:
+    def write_64_e_o_c_d(io, offset, cdir_size) # :nodoc:
       tmp = [
         ZIP64_END_OF_CD_SIG,
         44, # size of zip64 end of central directory record (excludes signature and field itself)
@@ -110,7 +110,7 @@ module Zip
       io << tmp.pack('VVQ<V')
     end
 
-    def unpack_64_e_o_c_d(buffer) #:nodoc:
+    def unpack_64_e_o_c_d(buffer) # :nodoc:
       _, # ZIP64_END_OF_CD_SIG. We know we have this at this point.
       @size_of_zip64_e_o_c_d,
       @version_made_by,
@@ -134,14 +134,14 @@ module Zip
                                end
     end
 
-    def unpack_64_eocd_locator(buffer) #:nodoc:
+    def unpack_64_eocd_locator(buffer) # :nodoc:
       _, # ZIP64_EOCD_LOCATOR_SIG. We know we have this at this point.
       _, zip64_eocd_offset, = buffer.unpack('VVQ<V')
 
       zip64_eocd_offset
     end
 
-    def unpack_e_o_c_d(buffer) #:nodoc:
+    def unpack_e_o_c_d(buffer) # :nodoc:
       _, # END_OF_CD_SIG. We know we have this at this point.
       num_disk,
       num_disk_cdir,
@@ -165,7 +165,7 @@ module Zip
                  end
     end
 
-    def read_central_directory_entries(io) #:nodoc:
+    def read_central_directory_entries(io) # :nodoc:
       # `StringIO` doesn't raise `EINVAL` if you seek beyond the current end,
       # so we need to catch that *and* query `io#eof?` here.
       eof = false
@@ -209,7 +209,7 @@ module Zip
       io.read(e_len)
     end
 
-    def read_eocds(io) #:nodoc:
+    def read_eocds(io) # :nodoc:
       base_location, data = eocd_data(io)
 
       eocd_location = data.rindex([END_OF_CD_SIG].pack('V'))
diff --git a/lib/zip/crypto/traditional_encryption.rb b/lib/zip/crypto/traditional_encryption.rb
index 0f60904..f035895 100644
--- a/lib/zip/crypto/traditional_encryption.rb
+++ b/lib/zip/crypto/traditional_encryption.rb
@@ -28,7 +28,7 @@ module Zip
 
     def update_keys(num)
       @key0 = ~Zlib.crc32(num, ~@key0)
-      @key1 = ((@key1 + (@key0 & 0xff)) * 134_775_813 + 1) & 0xffffffff
+      @key1 = (((@key1 + (@key0 & 0xff)) * 134_775_813) + 1) & 0xffffffff
       @key2 = ~Zlib.crc32((@key1 >> 24).chr, ~@key2)
     end
 
diff --git a/lib/zip/entry.rb b/lib/zip/entry.rb
index 38ebcb4..1895923 100644
--- a/lib/zip/entry.rb
+++ b/lib/zip/entry.rb
@@ -185,12 +185,12 @@ module Zip
 
     # Dynamic checkers
     %w[directory file symlink].each do |k|
-      define_method "#{k}?" do
+      define_method :"#{k}?" do
         file_type_is?(k.to_sym)
       end
     end
 
-    def name_is_directory? #:nodoc:all
+    def name_is_directory? # :nodoc:all
       @name.end_with?('/')
     end
 
@@ -207,7 +207,7 @@ module Zip
       ::File.absolute_path(cleanpath.to_s, root).match?(/([A-Z]:)?#{naive}/i)
     end
 
-    def local_entry_offset #:nodoc:all
+    def local_entry_offset # :nodoc:all
       local_header_offset + @local_header_size
     end
 
@@ -223,7 +223,7 @@ module Zip
       @comment ? @comment.bytesize : 0
     end
 
-    def calculate_local_header_size #:nodoc:all
+    def calculate_local_header_size # :nodoc:all
       LOCAL_ENTRY_STATIC_HEADER_LENGTH + name_size + extra_size
     end
 
@@ -239,12 +239,12 @@ module Zip
             "Local header size changed (#{@local_header_size} -> #{new_size})"
     end
 
-    def cdir_header_size #:nodoc:all
+    def cdir_header_size # :nodoc:all
       CDIR_ENTRY_STATIC_HEADER_LENGTH + name_size +
         (@extra ? @extra.c_dir_size : 0) + comment_size
     end
 
-    def next_header_offset #:nodoc:all
+    def next_header_offset # :nodoc:all
       local_entry_offset + compressed_size
     end
 
@@ -266,7 +266,7 @@ module Zip
 
       raise "unknown file type #{inspect}" unless directory? || file? || symlink?
 
-      __send__("create_#{ftype}", extract_path, &block)
+      __send__(:"create_#{ftype}", extract_path, &block)
       self
     end
 
@@ -275,7 +275,7 @@ module Zip
     end
 
     class << self
-      def read_c_dir_entry(io) #:nodoc:all
+      def read_c_dir_entry(io) # :nodoc:all
         path = if io.respond_to?(:path)
                  io.path
                else
@@ -314,7 +314,7 @@ module Zip
         @extra_length = buf.unpack('VCCvvvvVVVvv')
     end
 
-    def read_local_entry(io) #:nodoc:all
+    def read_local_entry(io) # :nodoc:all
       @dirty = false # No changes at this point.
       @local_header_offset = io.tell
 
@@ -371,7 +371,7 @@ module Zip
        @extra ? @extra.local_size : 0].pack('VvvvvvVVVvv')
     end
 
-    def write_local_entry(io, rewrite: false) #:nodoc:all
+    def write_local_entry(io, rewrite: false) # :nodoc:all
       prep_local_zip64_extra
       verify_local_header_size! if rewrite
       @local_header_offset = io.tell
@@ -463,7 +463,7 @@ module Zip
       end
     end
 
-    def read_c_dir_entry(io) #:nodoc:all
+    def read_c_dir_entry(io) # :nodoc:all
       @dirty = false # No changes at this point.
       static_sized_fields_buf = io.read(::Zip::CDIR_ENTRY_STATIC_HEADER_LENGTH)
       check_c_dir_entry_static_header_length(static_sized_fields_buf)
@@ -556,7 +556,7 @@ module Zip
       ].pack('VCCvvvvvVVVvvvvvVV')
     end
 
-    def write_c_dir_entry(io) #:nodoc:all
+    def write_c_dir_entry(io) # :nodoc:all
       prep_cdir_zip64_extra
 
       case @fstype
@@ -574,7 +574,7 @@ module Zip
              end
 
         unless ft.nil?
-          @external_file_attributes = (ft << 12 | (@unix_perms & 0o7777)) << 16
+          @external_file_attributes = ((ft << 12) | (@unix_perms & 0o7777)) << 16
         end
       end
 
@@ -639,7 +639,7 @@ module Zip
                  if name_is_directory?
                    raise ArgumentError,
                          "entry name '#{newEntry}' indicates directory entry, but " \
-                             "'#{src_path}' is not a directory"
+                         "'#{src_path}' is not a directory"
                  end
                  :file
                when 'directory'
@@ -649,7 +649,7 @@ module Zip
                  if name_is_directory?
                    raise ArgumentError,
                          "entry name '#{newEntry}' indicates directory entry, but " \
-                             "'#{src_path}' is not a directory"
+                         "'#{src_path}' is not a directory"
                  end
                  :symlink
                else
@@ -661,7 +661,7 @@ module Zip
       get_extra_attributes_from_path(@filepath)
     end
 
-    def write_to_zip_output_stream(zip_output_stream) #:nodoc:all
+    def write_to_zip_output_stream(zip_output_stream) # :nodoc:all
       if ftype == :directory
         zip_output_stream.put_next_entry(self)
       elsif @filepath
@@ -749,7 +749,7 @@ module Zip
 
     # apply missing data from the zip64 extra information field, if present
     # (required when file sizes exceed 2**32, but can be used for all files)
-    def parse_zip64_extra(for_local_header) #:nodoc:all
+    def parse_zip64_extra(for_local_header) # :nodoc:all
       return unless zip64?
 
       if for_local_header
diff --git a/lib/zip/entry_set.rb b/lib/zip/entry_set.rb
index 941e92e..cb4700d 100644
--- a/lib/zip/entry_set.rb
+++ b/lib/zip/entry_set.rb
@@ -61,12 +61,12 @@ module Zip
     end
 
     def glob(pattern, flags = ::File::FNM_PATHNAME | ::File::FNM_DOTMATCH | ::File::FNM_EXTGLOB)
-      entries.map do |entry|
+      entries.filter_map do |entry|
         next nil unless ::File.fnmatch(pattern, entry.name.chomp('/'), flags)
 
         yield(entry) if block_given?
         entry
-      end.compact
+      end
     end
 
     protected
diff --git a/lib/zip/errors.rb b/lib/zip/errors.rb
index c757a8d..5b75e9a 100644
--- a/lib/zip/errors.rb
+++ b/lib/zip/errors.rb
@@ -43,7 +43,7 @@ module Zip
 
     def message
       "Cannot create file or directory '#{@destination}'. " \
-      'A file already exists with that name.'
+        'A file already exists with that name.'
     end
   end
 
@@ -111,8 +111,8 @@ module Zip
 
     def message
       "The local header of this entry ('#{@entry.name}') does not contain " \
-      'the correct metadata for `Zip::InputStream` to be able to ' \
-      'uncompress it. Please use `Zip::File` instead of `Zip::InputStream`.'
+        'the correct metadata for `Zip::InputStream` to be able to ' \
+        'uncompress it. Please use `Zip::File` instead of `Zip::InputStream`.'
     end
   end
 end
diff --git a/lib/zip/extra_field.rb b/lib/zip/extra_field.rb
index 95dd5db..31d75d2 100644
--- a/lib/zip/extra_field.rb
+++ b/lib/zip/extra_field.rb
@@ -21,8 +21,8 @@ module Zip
     def extra_field_type_unknown(binstr, len, index, local)
       self['Unknown'] ||= Unknown.new
 
-      if !len || len + 4 > binstr[index..-1].bytesize
-        self['Unknown'].merge(binstr[index..-1], local: local)
+      if !len || len + 4 > binstr[index..].bytesize
+        self['Unknown'].merge(binstr[index..], local: local)
         return
       end
 
diff --git a/lib/zip/extra_field/generic.rb b/lib/zip/extra_field/generic.rb
index 137efe9..ddd8eed 100644
--- a/lib/zip/extra_field/generic.rb
+++ b/lib/zip/extra_field/generic.rb
@@ -21,17 +21,17 @@ module Zip
         return false
       end
 
-      [binstr[2, 2].unpack1('v'), binstr[4..-1]]
+      [binstr[2, 2].unpack1('v'), binstr[4..]]
     end
 
     def to_local_bin
       s = pack_for_local
-      self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v') << s
+      (self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v')) << s
     end
 
     def to_c_dir_bin
       s = pack_for_c_dir
-      self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v') << s
+      (self.class.const_get(:HEADER_ID) + [s.bytesize].pack('v')) << s
     end
   end
 end
diff --git a/lib/zip/extra_field/ntfs.rb b/lib/zip/extra_field/ntfs.rb
index be1541d..eac99ad 100644
--- a/lib/zip/extra_field/ntfs.rb
+++ b/lib/zip/extra_field/ntfs.rb
@@ -25,7 +25,7 @@ module Zip
       size, content = initial_parse(binstr)
       (size && content) || return
 
-      content = content[4..-1]
+      content = content[4..]
       tags = parse_tags(content)
 
       tag1 = tags[1]
@@ -86,7 +86,7 @@ module Zip
     end
 
     def from_ntfs_time(ntfs_time)
-      ::Zip::DOSTime.at(ntfs_time / WINDOWS_TICK - SEC_TO_UNIX_EPOCH)
+      ::Zip::DOSTime.at((ntfs_time / WINDOWS_TICK) - SEC_TO_UNIX_EPOCH)
     end
 
     def to_ntfs_time(time)
diff --git a/lib/zip/file.rb b/lib/zip/file.rb
index 9c66dc1..85a7503 100644
--- a/lib/zip/file.rb
+++ b/lib/zip/file.rb
@@ -356,7 +356,7 @@ module Zip
         # This zip is probably a non-empty StringIO.
         @create = false
         @cdir.read_from_stream(path_or_io)
-      elsif !@create && ::File.zero?(@name)
+      elsif !@create && ::File.empty?(@name)
         # A file exists, but it is empty, and we've said we're
         # NOT creating a new zip.
         raise Error, "File #{@name} has zero size. Did you mean to pass the create flag?"
diff --git a/lib/zip/file_split.rb b/lib/zip/file_split.rb
index 0f6c694..de5364a 100644
--- a/lib/zip/file_split.rb
+++ b/lib/zip/file_split.rb
@@ -7,13 +7,7 @@ module Zip
     DATA_BUFFER_SIZE = 8192
 
     def get_segment_size_for_split(segment_size)
-      if MIN_SEGMENT_SIZE > segment_size
-        MIN_SEGMENT_SIZE
-      elsif MAX_SEGMENT_SIZE < segment_size
-        MAX_SEGMENT_SIZE
-      else
-        segment_size
-      end
+      segment_size.clamp(MIN_SEGMENT_SIZE, MAX_SEGMENT_SIZE)
     end
 
     def get_partial_zip_file_name(zip_file_name, partial_zip_file_name)
diff --git a/lib/zip/filesystem/dir.rb b/lib/zip/filesystem/dir.rb
index a5e1ef9..5ae4ac4 100644
--- a/lib/zip/filesystem/dir.rb
+++ b/lib/zip/filesystem/dir.rb
@@ -45,8 +45,8 @@ module Zip
         entries
       end
 
-      def glob(*args, &block)
-        @mapped_zip.glob(*args, &block)
+      def glob(...)
+        @mapped_zip.glob(...)
       end
 
       def foreach(directory_name)
diff --git a/lib/zip/filesystem/zip_file_name_mapper.rb b/lib/zip/filesystem/zip_file_name_mapper.rb
index 6b9c7f5..77a4e69 100644
--- a/lib/zip/filesystem/zip_file_name_mapper.rb
+++ b/lib/zip/filesystem/zip_file_name_mapper.rb
@@ -74,7 +74,7 @@ module Zip
       private
 
       def expand_to_entry(path)
-        expand_path(path)[1..-1]
+        expand_path(path)[1..]
       end
     end
   end
diff --git a/lib/zip/input_stream.rb b/lib/zip/input_stream.rb
index f48466c..56ecf4f 100644
--- a/lib/zip/input_stream.rb
+++ b/lib/zip/input_stream.rb
@@ -144,8 +144,7 @@ module Zip
               'A password is required to decode this zip file'
       end
 
-      if @current_entry.incomplete? && @current_entry.compressed_size == 0 \
-        && !@complete_entry
+      if @current_entry.incomplete? && @current_entry.compressed_size == 0 && !@complete_entry
         raise StreamingError, @current_entry
       end
 
@@ -166,8 +165,8 @@ module Zip
       return ::Zip::NullDecompressor if @current_entry.nil?
 
       decompressed_size =
-        if @current_entry.incomplete? && @current_entry.crc == 0 \
-           && @current_entry.size == 0 && @complete_entry
+        if @current_entry.incomplete? && @current_entry.crc == 0 &&
+           @current_entry.size == 0 && @complete_entry
           @complete_entry.size
         else
           @current_entry.size
diff --git a/lib/zip/ioextras.rb b/lib/zip/ioextras.rb
index fbc77c6..6668896 100644
--- a/lib/zip/ioextras.rb
+++ b/lib/zip/ioextras.rb
@@ -12,7 +12,7 @@ module Zip
       def copy_stream_n(ostream, istream, nbytes)
         toread = nbytes
         while toread > 0 && !istream.eof?
-          tr = toread > CHUNK_SIZE ? CHUNK_SIZE : toread
+          tr = [toread, CHUNK_SIZE].min
           ostream.write(istream.read(tr, +''))
           toread -= tr
         end
diff --git a/lib/zip/ioextras/abstract_input_stream.rb b/lib/zip/ioextras/abstract_input_stream.rb
index c132725..ed95e63 100644
--- a/lib/zip/ioextras/abstract_input_stream.rb
+++ b/lib/zip/ioextras/abstract_input_stream.rb
@@ -76,13 +76,13 @@ module Zip
         a_sep_string = "#{$INPUT_RECORD_SEPARATOR}#{$INPUT_RECORD_SEPARATOR}" if a_sep_string.empty?
 
         buffer_index = 0
-        over_limit   = (number_of_bytes && @output_buffer.bytesize >= number_of_bytes)
+        over_limit   = number_of_bytes && @output_buffer.bytesize >= number_of_bytes
         while (match_index = @output_buffer.index(a_sep_string, buffer_index)).nil? && !over_limit
           buffer_index = [buffer_index, @output_buffer.bytesize - a_sep_string.bytesize].max
           return @output_buffer.empty? ? nil : flush if input_finished?
 
           @output_buffer << produce_input
-          over_limit = (number_of_bytes && @output_buffer.bytesize >= number_of_bytes)
+          over_limit = number_of_bytes && @output_buffer.bytesize >= number_of_bytes
         end
         sep_index = [
           match_index + a_sep_string.bytesize,
diff --git a/lib/zip/output_stream.rb b/lib/zip/output_stream.rb
index 0c4e93c..095126b 100644
--- a/lib/zip/output_stream.rb
+++ b/lib/zip/output_stream.rb
@@ -139,8 +139,8 @@ module Zip
       return unless @current_entry
 
       finish
-      @current_entry.compressed_size = @output_stream.tell - \
-                                       @current_entry.local_header_offset - \
+      @current_entry.compressed_size = @output_stream.tell -
+                                       @current_entry.local_header_offset -
                                        @current_entry.calculate_local_header_size
       @current_entry.size = @compressor.size
       @current_entry.crc = @compressor.crc
diff --git a/rubyzip.gemspec b/rubyzip.gemspec
index 4c55767..f9d85f1 100644
--- a/rubyzip.gemspec
+++ b/rubyzip.gemspec
@@ -4,7 +4,7 @@ require_relative 'lib/zip/version'
 
 Gem::Specification.new do |s|
   s.name          = 'rubyzip'
-  s.version       = ::Zip::VERSION
+  s.version       = Zip::VERSION
   s.authors       = ['Robert Haines', 'John Lees-Miller', 'Alexander Simonov']
   s.email         = [
     'hainesr@gmail.com', 'jdleesmiller@gmail.com', 'alex@simonov.me'
@@ -18,21 +18,22 @@ Gem::Specification.new do |s|
   s.license       = 'BSD-2-Clause'
 
   s.metadata      = {
-    'bug_tracker_uri'   => 'https://github.com/rubyzip/rubyzip/issues',
-    'changelog_uri'     => "https://github.com/rubyzip/rubyzip/blob/v#{s.version}/Changelog.md",
-    'documentation_uri' => "https://www.rubydoc.info/gems/rubyzip/#{s.version}",
-    'source_code_uri'   => "https://github.com/rubyzip/rubyzip/tree/v#{s.version}",
-    'wiki_uri'          => 'https://github.com/rubyzip/rubyzip/wiki'
+    'bug_tracker_uri'       => 'https://github.com/rubyzip/rubyzip/issues',
+    'changelog_uri'         => "https://github.com/rubyzip/rubyzip/blob/v#{s.version}/Changelog.md",
+    'documentation_uri'     => "https://www.rubydoc.info/gems/rubyzip/#{s.version}",
+    'source_code_uri'       => "https://github.com/rubyzip/rubyzip/tree/v#{s.version}",
+    'wiki_uri'              => 'https://github.com/rubyzip/rubyzip/wiki',
+    'rubygems_mfa_required' => 'true'
   }
 
-  s.required_ruby_version = '>= 2.5'
+  s.required_ruby_version = '>= 3.0'
 
-  s.add_development_dependency 'minitest', '~> 5.4'
-  s.add_development_dependency 'rake', '~> 12.3.3'
-  s.add_development_dependency 'rdoc', '~> 6.4.0'
-  s.add_development_dependency 'rubocop', '~> 1.12.0'
-  s.add_development_dependency 'rubocop-performance', '~> 1.10.0'
-  s.add_development_dependency 'rubocop-rake', '~> 0.5.0'
-  s.add_development_dependency 'simplecov', '~> 0.18.0'
+  s.add_development_dependency 'minitest', '~> 5.22.0'
+  s.add_development_dependency 'rake', '~> 13.1.0'
+  s.add_development_dependency 'rdoc', '~> 6.6.2'
+  s.add_development_dependency 'rubocop', '~> 1.61.0'
+  s.add_development_dependency 'rubocop-performance', '~> 1.20.0'
+  s.add_development_dependency 'rubocop-rake', '~> 0.6.0'
+  s.add_development_dependency 'simplecov', '~> 0.22.0'
   s.add_development_dependency 'simplecov-lcov', '~> 0.8'
 end
diff --git a/samples/example_filesystem.rb b/samples/example_filesystem.rb
index 6909848..ec0075e 100755
--- a/samples/example_filesystem.rb
+++ b/samples/example_filesystem.rb
@@ -7,7 +7,7 @@ require 'zip/filesystem'
 
 EXAMPLE_ZIP = 'filesystem.zip'
 
-File.delete(EXAMPLE_ZIP) if File.exist?(EXAMPLE_ZIP)
+FileUtils.rm_f(EXAMPLE_ZIP)
 
 Zip::File.open(EXAMPLE_ZIP, create: true) do |zf|
   zf.file.open('file1.txt', 'w') { |os| os.write 'first file1.txt' }
diff --git a/samples/write_simple.rb b/samples/write_simple.rb
index f793920..84ac138 100755
--- a/samples/write_simple.rb
+++ b/samples/write_simple.rb
@@ -5,7 +5,7 @@ $LOAD_PATH << '../lib'
 
 require 'zip'
 
-::Zip::OutputStream.open('simple.zip') do |zos|
+Zip::OutputStream.open('simple.zip') do |zos|
   zos.put_next_entry 'entry.txt'
   zos.puts 'Hello world'
 end
diff --git a/test/case_sensitivity_test.rb b/test/case_sensitivity_test.rb
index 07e8457..9a4d84f 100644
--- a/test/case_sensitivity_test.rb
+++ b/test/case_sensitivity_test.rb
@@ -18,7 +18,7 @@ class ZipCaseSensitivityTest < MiniTest::Test
   def test_add_case_sensitive
     ::Zip.case_insensitive_match = false
 
-    SRC_FILES.each { |fn, _en| assert(::File.exist?(fn)) }
+    SRC_FILES.each { |(fn, _en)| assert(::File.exist?(fn)) }
     zf = ::Zip::File.new(EMPTY_FILENAME, create: true)
 
     SRC_FILES.each { |fn, en| zf.add(en, fn) }
@@ -37,7 +37,7 @@ class ZipCaseSensitivityTest < MiniTest::Test
   def test_add_case_insensitive
     ::Zip.case_insensitive_match = true
 
-    SRC_FILES.each { |fn, _en| assert(::File.exist?(fn)) }
+    SRC_FILES.each { |(fn, _en)| assert(::File.exist?(fn)) }
     zf = ::Zip::File.new(EMPTY_FILENAME, create: true)
 
     error = assert_raises Zip::EntryExistsError do
@@ -50,7 +50,7 @@ class ZipCaseSensitivityTest < MiniTest::Test
   def test_add_case_sensitive_read_case_insensitive
     ::Zip.case_insensitive_match = false
 
-    SRC_FILES.each { |fn, _en| assert(::File.exist?(fn)) }
+    SRC_FILES.each { |(fn, _en)| assert(::File.exist?(fn)) }
     zf = ::Zip::File.new(EMPTY_FILENAME, create: true)
 
     SRC_FILES.each { |fn, en| zf.add(en, fn) }
diff --git a/test/deflater_test.rb b/test/deflater_test.rb
index fb78220..9e6b1e2 100644
--- a/test/deflater_test.rb
+++ b/test/deflater_test.rb
@@ -49,7 +49,7 @@ class DeflaterTest < MiniTest::Test
   private
 
   def load_file(filename)
-    File.open(filename, 'rb', &:read)
+    File.binread(filename)
   end
 
   def deflate(data, filename)
diff --git a/test/encryption_test.rb b/test/encryption_test.rb
index 6fd6395..0561281 100644
--- a/test/encryption_test.rb
+++ b/test/encryption_test.rb
@@ -16,7 +16,7 @@ class EncryptionTest < MiniTest::Test
   end
 
   def test_encrypt
-    content = File.open(INPUT_FILE1, 'r').read
+    content = File.read(INPUT_FILE1)
     test_filename = 'top_secret_file.txt'
 
     password = 'swordfish'
@@ -58,11 +58,11 @@ class EncryptionTest < MiniTest::Test
       entry = zis.get_next_entry
       assert_equal 'file1.txt', entry.name
       assert_equal 1_327, entry.size
-      assert_equal ::File.open(INPUT_FILE1, 'r').read, zis.read
+      assert_equal ::File.read(INPUT_FILE1), zis.read
       entry = zis.get_next_entry
       assert_equal 'file2.txt', entry.name
       assert_equal 41_234, entry.size
-      assert_equal ::File.open(INPUT_FILE2, 'r').read, zis.read
+      assert_equal ::File.read(INPUT_FILE2), zis.read
     end
   end
 end
diff --git a/test/file_extract_directory_test.rb b/test/file_extract_directory_test.rb
index 17d0995..8c70d75 100644
--- a/test/file_extract_directory_test.rb
+++ b/test/file_extract_directory_test.rb
@@ -22,7 +22,7 @@ class ZipFileExtractDirectoryTest < MiniTest::Test
     super
 
     Dir.rmdir(TEST_OUT_NAME) if File.directory? TEST_OUT_NAME
-    File.delete(TEST_OUT_NAME) if File.exist? TEST_OUT_NAME
+    FileUtils.rm_f(TEST_OUT_NAME)
   end
 
   def test_extract_directory
diff --git a/test/file_extract_test.rb b/test/file_extract_test.rb
index 77da4a6..9e353d1 100644
--- a/test/file_extract_test.rb
+++ b/test/file_extract_test.rb
@@ -38,7 +38,7 @@ class ZipFileExtractTest < MiniTest::Test
 
   def test_extract_exists
     text = 'written text'
-    ::File.open(EXTRACTED_FILENAME, 'w') { |f| f.write(text) }
+    ::File.write(EXTRACTED_FILENAME, text)
 
     assert_raises(::Zip::DestinationExistsError) do
       ::Zip::File.open(TEST_ZIP.zip_name) do |zf|
@@ -53,7 +53,7 @@ class ZipFileExtractTest < MiniTest::Test
 
   def test_extract_exists_overwrite
     text = 'written text'
-    ::File.open(EXTRACTED_FILENAME, 'w') { |f| f.write(text) }
+    ::File.write(EXTRACTED_FILENAME, text)
 
     called_correctly = false
     ::Zip::File.open(TEST_ZIP.zip_name) do |zf|
@@ -123,9 +123,7 @@ class ZipFileExtractTest < MiniTest::Test
       assert data.include?(true_size_bytes)
       data.gsub! true_size_bytes, fake_size_bytes
 
-      File.open(fake_zip, 'wb') do |file|
-        file.write data
-      end
+      File.binwrite(fake_zip, data)
 
       Dir.chdir tmp do
         ::Zip::File.open(fake_zip) do |zf|
@@ -187,9 +185,7 @@ class ZipFileExtractTest < MiniTest::Test
       assert data.include?(true_size_bytes)
       data.gsub! true_size_bytes, fake_size_bytes
 
-      File.open(fake_zip, 'wb') do |file|
-        file.write data
-      end
+      File.binwrite(fake_zip, data)
 
       Dir.chdir tmp do
         ::Zip::File.open(fake_zip) do |zf|
diff --git a/test/file_split_test.rb b/test/file_split_test.rb
index 0e54cc9..859bf93 100644
--- a/test/file_split_test.rb
+++ b/test/file_split_test.rb
@@ -15,10 +15,10 @@ class ZipFileSplitTest < MiniTest::Test
 
   def teardown
     File.delete(TEST_ZIP.zip_name)
-    File.delete(UNSPLITTED_FILENAME) if File.exist?(UNSPLITTED_FILENAME)
+    FileUtils.rm_f(UNSPLITTED_FILENAME)
 
     Dir["#{TEST_ZIP.zip_name}.*"].each do |zip_file_name|
-      File.delete(zip_file_name) if File.exist?(zip_file_name)
+      FileUtils.rm_f(zip_file_name)
     end
   end
 
@@ -33,7 +33,7 @@ class ZipFileSplitTest < MiniTest::Test
 
     return if result.nil?
 
-    Dir["#{TEST_ZIP.zip_name}.*"].sort.each_with_index do |zip_file_name, index|
+    Dir["#{TEST_ZIP.zip_name}.*"].each_with_index do |zip_file_name, index|
       File.open(zip_file_name, 'rb') do |zip_file|
         zip_file.read([::Zip::SPLIT_FILE_SIGNATURE].pack('V').size) if index.zero?
         File.open(UNSPLITTED_FILENAME, 'ab') do |file|
diff --git a/test/file_test.rb b/test/file_test.rb
index b6dd766..b09f78b 100644
--- a/test/file_test.rb
+++ b/test/file_test.rb
@@ -22,7 +22,7 @@ class ZipFileTest < MiniTest::Test
       zf.comment = comment
     end
 
-    ::File.open(EMPTY_FILENAME, 'wb') { |file| file.write buffer.string }
+    ::File.binwrite(EMPTY_FILENAME, buffer.string)
 
     zf_read = ::Zip::File.new(EMPTY_FILENAME)
     assert_equal(comment, zf_read.comment)
@@ -105,7 +105,7 @@ class ZipFileTest < MiniTest::Test
       assert_equal(entry.time, custom_entry_args[:time])
 
       zf.get_output_stream('entry.bin') do |os|
-        os.write(::File.open('test/data/generated/5entry.zip', 'rb').read)
+        os.write(::File.binread('test/data/generated/5entry.zip'))
       end
     end
 
@@ -113,7 +113,7 @@ class ZipFileTest < MiniTest::Test
       assert_equal(count + 3, zf.size)
       assert_equal('Putting stuff in new_entry.txt', zf.read('new_entry.txt'))
       assert_equal('Putting stuff in data/generated/empty.txt', zf.read('test/data/generated/empty.txt'))
-      assert_equal(File.open('test/data/generated/5entry.zip', 'rb').read, zf.read('entry.bin'))
+      assert_equal(File.binread('test/data/generated/5entry.zip'), zf.read('entry.bin'))
     end
   end
 
@@ -693,7 +693,7 @@ class ZipFileTest < MiniTest::Test
     old_name = zf.entries.first
     zf.rename(old_name, new_name)
     buffer = zf.write_buffer(::StringIO.new)
-    File.open(TEST_ZIP.zip_name, 'wb') { |f| f.write buffer.string }
+    File.binwrite(TEST_ZIP.zip_name, buffer.string)
     zf_read = ::Zip::File.new(TEST_ZIP.zip_name)
     refute_nil(zf_read.entries.detect { |e| e.name == new_name })
     assert_nil(zf_read.entries.detect { |e| e.name == old_name })
diff --git a/test/filesystem/file_nonmutating_test.rb b/test/filesystem/file_nonmutating_test.rb
index e6b1f13..46d700b 100644
--- a/test/filesystem/file_nonmutating_test.rb
+++ b/test/filesystem/file_nonmutating_test.rb
@@ -406,7 +406,7 @@ class FileNonmutatingTest < MiniTest::Test
 
       zf.file.foreach('test/data/file1.txt') do |l|
         # Ruby replaces \n with \r\n automatically on windows
-        newline = Zip::RUNNING_ON_WINDOWS ? l.gsub(/\r\n/, "\n") : l
+        newline = Zip::RUNNING_ON_WINDOWS ? l.gsub("\r\n", "\n") : l
         assert_equal(ref[index], newline)
         index = index.next
       end
@@ -420,7 +420,7 @@ class FileNonmutatingTest < MiniTest::Test
 
       zf.file.foreach('test/data/file1.txt', ' ') do |l|
         # Ruby replaces \n with \r\n automatically on windows
-        newline = Zip::RUNNING_ON_WINDOWS ? l.gsub(/\r\n/, "\n") : l
+        newline = Zip::RUNNING_ON_WINDOWS ? l.gsub("\r\n", "\n") : l
         assert_equal(ref[index], newline)
         index = index.next
       end
@@ -486,7 +486,7 @@ class FileNonmutatingTest < MiniTest::Test
       zip_file = zf.file.readlines('test/data/file1.txt')
 
       # Ruby replaces \n with \r\n automatically on windows
-      zip_file.each { |l| l.gsub!(/\r\n/, "\n") } if Zip::RUNNING_ON_WINDOWS
+      zip_file.each { |l| l.gsub!("\r\n", "\n") } if Zip::RUNNING_ON_WINDOWS
 
       assert_equal(orig_file, zip_file)
     end
@@ -498,7 +498,7 @@ class FileNonmutatingTest < MiniTest::Test
 
       # Ruby replaces \n with \r\n automatically on windows
       zip_file = if Zip::RUNNING_ON_WINDOWS
-                   zf.file.read('test/data/file1.txt').gsub(/\r\n/, "\n")
+                   zf.file.read('test/data/file1.txt').gsub("\r\n", "\n")
                  else
                    zf.file.read('test/data/file1.txt')
                  end
diff --git a/test/gentestfiles.rb b/test/gentestfiles.rb
index 5082042..75ce4d8 100755
--- a/test/gentestfiles.rb
+++ b/test/gentestfiles.rb
@@ -20,7 +20,7 @@ class TestFiles
 
   class << self
     def create_test_files
-      Dir.mkdir 'test/data/generated' unless Dir.exist?('test/data/generated')
+      FileUtils.mkdir_p 'test/data/generated'
 
       ASCII_TEST_FILES.each_with_index do |filename, index|
         create_random_ascii(filename, 1E4 * (index + 1))
diff --git a/test/output_stream_test.rb b/test/output_stream_test.rb
index b87f64f..16254f1 100644
--- a/test/output_stream_test.rb
+++ b/test/output_stream_test.rb
@@ -29,7 +29,7 @@ class ZipOutputStreamTest < MiniTest::Test
       zos.comment = TEST_ZIP.comment
       write_test_zip(zos)
     end
-    File.open(TEST_ZIP.zip_name, 'wb') { |f| f.write buffer.string }
+    File.binwrite(TEST_ZIP.zip_name, buffer.string)
     assert_test_zip_contents(TEST_ZIP)
   end
 
@@ -50,7 +50,7 @@ class ZipOutputStreamTest < MiniTest::Test
     end
 
     tmp_file.rewind
-    File.open(TEST_ZIP.zip_name, 'wb') { |f| f.write(tmp_file.read) }
+    File.binwrite(TEST_ZIP.zip_name, tmp_file.read)
     tmp_file.unlink
 
     assert_test_zip_contents(TEST_ZIP)
@@ -75,7 +75,7 @@ class ZipOutputStreamTest < MiniTest::Test
       zos.comment = TEST_ZIP.comment
       write_test_zip(zos)
     end
-    File.open(TEST_ZIP.zip_name, 'wb') { |f| f.write buffer.string }
+    File.binwrite(TEST_ZIP.zip_name, buffer.string)
     assert_test_zip_contents(TEST_ZIP)
   end
 
diff --git a/test/settings_test.rb b/test/settings_test.rb
index 3bf66e4..9e280aa 100644
--- a/test/settings_test.rb
+++ b/test/settings_test.rb
@@ -12,7 +12,7 @@ class ZipSettingsTest < MiniTest::Test
     super
 
     Dir.rmdir(TEST_OUT_NAME) if File.directory? TEST_OUT_NAME
-    File.delete(TEST_OUT_NAME) if File.exist? TEST_OUT_NAME
+    FileUtils.rm_f(TEST_OUT_NAME)
   end
 
   def teardown
diff --git a/test/stored_support_test.rb b/test/stored_support_test.rb
index 4e0cdad..e1cd181 100644
--- a/test/stored_support_test.rb
+++ b/test/stored_support_test.rb
@@ -14,11 +14,11 @@ class StoredSupportTest < MiniTest::Test
       entry = zis.get_next_entry
       assert_equal 'file1.txt', entry.name
       assert_equal 1_327, entry.size
-      assert_equal ::File.open(INPUT_FILE1, 'r').read, zis.read
+      assert_equal ::File.read(INPUT_FILE1), zis.read
       entry = zis.get_next_entry
       assert_equal 'file2.txt', entry.name
       assert_equal 41_234, entry.size
-      assert_equal ::File.open(INPUT_FILE2, 'r').read, zis.read
+      assert_equal ::File.read(INPUT_FILE2), zis.read
     end
   end
 
@@ -29,11 +29,11 @@ class StoredSupportTest < MiniTest::Test
       entry = zis.get_next_entry
       assert_equal 'file1.txt', entry.name
       assert_equal 1_327, entry.size
-      assert_equal ::File.open(INPUT_FILE1, 'r').read, zis.read
+      assert_equal ::File.read(INPUT_FILE1), zis.read
       entry = zis.get_next_entry
       assert_equal 'file2.txt', entry.name
       assert_equal 41_234, entry.size
-      assert_equal ::File.open(INPUT_FILE2, 'r').read, zis.read
+      assert_equal ::File.read(INPUT_FILE2), zis.read
     end
   end
 end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index c3ab2bb..8f665b1 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -12,7 +12,7 @@ require 'gentestfiles'
 TestFiles.create_test_files
 TestZipFile.create_test_zips
 
-::MiniTest.after_run do
+MiniTest.after_run do
   FileUtils.rm_rf('test/data/generated')
 end
 
@@ -137,7 +137,7 @@ module CommonZipFileFixture
   TEST_ZIP.zip_name = 'test/data/generated/5entry_copy.zip'
 
   def setup
-    File.delete(EMPTY_FILENAME) if File.exist?(EMPTY_FILENAME)
+    FileUtils.rm_f(EMPTY_FILENAME)
     FileUtils.cp(TestZipFile::TEST_ZIP2.zip_name, TEST_ZIP.zip_name)
   end
 end