diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bdc8f0cd..a913540f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,7 +28,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
@@ -36,8 +35,6 @@ jobs:
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
-            experimental: true
           - ruby-version: 'jruby-10.0'
             experimental: true
     steps:
@@ -61,7 +58,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
@@ -69,8 +65,6 @@ jobs:
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
-            experimental: true
           - ruby-version: 'jruby-10.0'
             experimental: true
     steps:
@@ -94,7 +88,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
@@ -102,8 +95,6 @@ jobs:
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
-            experimental: true
           - ruby-version: 'jruby-10.0'
             experimental: true
     steps:
@@ -127,7 +118,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
@@ -135,8 +125,6 @@ jobs:
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
-            experimental: true
           - ruby-version: 'jruby-10.0'
             experimental: true
     steps:
diff --git a/.rubocop.yml b/.rubocop.yml
index 5b5cfcdf..b169f1c8 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -11,7 +11,7 @@ AllCops:
     - 'tmp/**/*'
     - 'vendor/**/*'
     - 'gemfiles/*'
-  TargetRubyVersion: 3.1
+  TargetRubyVersion: 3.2
 
 Metrics/BlockLength:
   Enabled: false
diff --git a/CHANGELOG.md b/CHANGELOG.md
index d007a2a8..efd38d62 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,7 @@
 * [CHORE] ...
 * [FEATURE] ...
 
+* [CHANGE] Drop support for Ruby 3.1.x and JRuby 9.4 (by [@faisal][])
 * [CHANGE] Add CI support for JRuby 10.0 (by [@faisal][])
 * [CHANGE] Bump cucumber dependency (by [@faisal][])
 * [BUGFIX] Fixed regression in compatibility with Flog 4.9.0 (by [@faisal][])
diff --git a/rubycritic.gemspec b/rubycritic.gemspec
index b7f54339..ff4adb93 100644
--- a/rubycritic.gemspec
+++ b/rubycritic.gemspec
@@ -15,7 +15,7 @@ Gem::Specification.new do |spec|
   spec.summary       = 'RubyCritic is a Ruby code quality reporter'
   spec.homepage      = 'https://github.com/whitesmith/rubycritic'
   spec.license       = 'MIT'
-  spec.required_ruby_version = '>= 3.1.0'
+  spec.required_ruby_version = '>= 3.2.0'
 
   spec.files = [
     'CHANGELOG.md',
@@ -56,9 +56,10 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency 'diff-lcs', '~> 1.3'
   spec.add_development_dependency 'fakefs', '~> 3.0.0'
   spec.add_development_dependency 'irb'
-  spec.add_development_dependency 'mdl', '~> 0.13.0', '>= 0.12.0'
-  spec.add_development_dependency 'minitest', '~> 5.26.0', '>= 5.3.0'
-  spec.add_development_dependency 'minitest-around', '~> 0.5.0', '>= 0.4.0'
+  spec.add_development_dependency 'mdl', '~> 0.15.0', '>= 0.12.0'
+  spec.add_development_dependency 'minitest', '~> 6.0.0'
+  spec.add_development_dependency 'minitest-around', '~> 0.6.0'
+  spec.add_development_dependency 'minitest-mock'
   spec.add_development_dependency 'mocha', '~> 3.0.0'
   spec.add_development_dependency 'ostruct'
   spec.add_development_dependency 'rake', '~> 13.3.0', '>= 11.0.0'
diff --git a/test/lib/rubycritic/commands/compare_test.rb b/test/lib/rubycritic/commands/compare_test.rb
index 91ba0aff..d7c8d354 100644
--- a/test/lib/rubycritic/commands/compare_test.rb
+++ b/test/lib/rubycritic/commands/compare_test.rb
@@ -1,6 +1,7 @@
 # frozen_string_literal: true
 
 require 'test_helper'
+require 'minitest/mock'
 require 'rubycritic/commands/compare'
 require 'rubycritic/cli/options'
 require 'rubycritic/configuration'