diff --git a/CHANGELOG.md b/CHANGELOG.md
index ad819a71..7b7dc698 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,8 +1,9 @@
 # main [(unreleased)](https://github.com/whitesmith/rubycritic/compare/v4.9.1...main)
 
+* [CHANGE] Adds development dependency for gems removed from standard library in Ruby 3.5 -- ostruct, irb, rdoc (by [@faisal][])
 * [CHANGE] Add .solargraph.yml config file to enable Solargraph LSP use in editors such as BBedit (by [@faisal])
 * [CHANGE] Drop support for Ruby 3.0.x (by [@faisal][])
-* [CHANGE] Bump minitest, mocha, rubocop dependencies (by [@faisal][])
+* [CHANGE] Bump aruba, fakefs, minitest, mocha, reek, rubocop dependencies (by [@faisal][])
 * [CHANGE] Drop support for Ruby 2.7.x (by [@faisal][])
 
 # v4.9.1 / 2024-04-14 [(commits)](https://github.com/whitesmith/rubycritic/compare/v4.9.0...v4.9.1)
diff --git a/rubycritic.gemspec b/rubycritic.gemspec
index ca118b9b..8247f9cb 100644
--- a/rubycritic.gemspec
+++ b/rubycritic.gemspec
@@ -35,30 +35,32 @@ Gem::Specification.new do |spec|
   spec.add_dependency 'launchy', '>= 2.5.2'
   spec.add_dependency 'parser', '>= 3.3.0.5'
   spec.add_dependency 'rainbow', '~> 3.1.1'
-  spec.add_dependency 'reek', '~> 6.3.0', '< 7.0'
+  spec.add_dependency 'reek', '~> 6.4.0', '< 7.0'
   spec.add_dependency 'rexml'
   spec.add_dependency 'ruby_parser', '~> 3.21'
   spec.add_dependency 'simplecov', '>= 0.22.0'
   spec.add_dependency 'tty-which', '~> 0.5.0'
   spec.add_dependency 'virtus', '~> 2.0'
 
-  spec.add_development_dependency 'aruba', '~> 2.2.0'
+  spec.add_development_dependency 'aruba', '~> 2.3.0'
   spec.add_development_dependency 'bundler', '>= 2.0.0'
   if RUBY_PLATFORM == 'java'
     spec.add_development_dependency 'pry-debugger-jruby'
   else
     spec.add_development_dependency 'byebug', '~> 11.0', '>= 10.0'
   end
-  spec.add_development_dependency 'cucumber', '~> 9.2.0', '!= 9.0.0'
+  spec.add_development_dependency 'cucumber', '~> 9.2.1', '!= 9.0.0'
   spec.add_development_dependency 'diff-lcs', '~> 1.3'
-  spec.add_development_dependency 'fakefs', '~> 2.5.0'
+  spec.add_development_dependency 'fakefs', '~> 2.8.0'
+  spec.add_development_dependency 'irb'
   spec.add_development_dependency 'mdl', '~> 0.13.0', '>= 0.12.0'
   spec.add_development_dependency 'minitest', '~> 5.25.2', '>= 5.3.0'
   spec.add_development_dependency 'minitest-around', '~> 0.5.0', '>= 0.4.0'
-  spec.add_development_dependency 'mocha', '~> 2.6.1'
+  spec.add_development_dependency 'mocha', '~> 2.7.1'
+  spec.add_development_dependency 'ostruct'
   spec.add_development_dependency 'rake', '~> 13.2.0', '>= 11.0.0'
   spec.add_development_dependency 'rexml', '>= 3.2.0'
-  spec.add_development_dependency 'rubocop', '~> 1.69.0', '>= 1.54.0'
+  spec.add_development_dependency 'rubocop', '~> 1.70.0', '>= 1.54.0'
   spec.add_development_dependency 'rubocop-minitest'
   spec.add_development_dependency 'rubocop-performance'
   spec.add_development_dependency 'rubocop-rake'