diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8f7d3ef9..5794469e 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -28,7 +28,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.2'
           - '3.3'
           - '3.4'
           - '4.0'
@@ -59,7 +58,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.2'
           - '3.3'
           - '3.4'
           - '4.0'
@@ -90,7 +88,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.2'
           - '3.3'
           - '3.4'
           - '4.0'
@@ -121,7 +118,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.2'
           - '3.3'
           - '3.4'
           - '4.0'
diff --git a/.rubocop.yml b/.rubocop.yml
index 0bb16826..31ecf728 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -11,7 +11,7 @@ AllCops:
     - 'tmp/**/*'
     - 'vendor/**/*'
     - 'gemfiles/*'
-  TargetRubyVersion: 3.2
+  TargetRubyVersion: 3.3
 
 Gemspec/DevelopmentDependencies:
   Exclude:
@@ -76,6 +76,13 @@ Style/Documentation:
 Style/HashSyntax:
   EnforcedShorthandSyntax: either
 
+Style/OneClassPerFile:
+  Exclude:
+    - 'lib/rubycritic/analysers/helpers/ast_node.rb'
+    - 'test/analysers_test_helper.rb'
+    - 'test/fakefs_helper.rb'
+    - 'test/test_helper.rb'
+
 Style/OpenStructUse:
   Exclude:
     - 'test/lib/rubycritic/generators/turbulence_test.rb'
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14ab4c63..40f3838c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@
 * [CHORE] ...
 * [FEATURE] ...
 
+* [CHANGE] Drop support for Ruby 3.2 (by [@faisal][])
+
 # v5.0.0 / 2026-01-26 [(commits)](https://github.com/whitesmith/rubycritic/compare/v4.12.0...v5.0.0)
 
 * [CHORE] Bump byebug dependency (by [@faisal][])
diff --git a/lib/rubycritic/analysers/helpers/ast_node.rb b/lib/rubycritic/analysers/helpers/ast_node.rb
index 6cf2280b..274c22eb 100644
--- a/lib/rubycritic/analysers/helpers/ast_node.rb
+++ b/lib/rubycritic/analysers/helpers/ast_node.rb
@@ -23,9 +23,7 @@ def recursive_children(&block)
       end
 
       def module_names
-        ast_node_children = children.select do |child|
-          child.is_a?(Parser::AST::Node)
-        end
+        ast_node_children = children.grep(Parser::AST::Node)
 
         children_modules = ast_node_children.flat_map(&:module_names)
 
diff --git a/lib/rubycritic/analysis_summary.rb b/lib/rubycritic/analysis_summary.rb
index e8c40b92..0b7c7600 100644
--- a/lib/rubycritic/analysis_summary.rb
+++ b/lib/rubycritic/analysis_summary.rb
@@ -11,8 +11,8 @@ def initialize(analysed_modules)
     end
 
     def generate
-      %w[A B C D F].each_with_object({}) do |rating, summary|
-        summary[rating] = generate_for(rating)
+      %w[A B C D F].to_h do |rating|
+        [rating, generate_for(rating)]
       end
     end
 
diff --git a/rubycritic.gemspec b/rubycritic.gemspec
index 5ae87729..4920774d 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 = '>= 3.2.0'
+  spec.required_ruby_version = '>= 3.3.0'
 
   spec.files = [
     'CHANGELOG.md',