diff --git a/app/controllers/scores_controller.rb b/app/controllers/scores_controller.rb
index a817261..9723565 100644
--- a/app/controllers/scores_controller.rb
+++ b/app/controllers/scores_controller.rb
@@ -5,7 +5,6 @@ class ScoresController < ApplicationController
   before_action :set_score, only: %i[show edit update destroy]
 
   def index
-    logger.info 'index called A'
     @q = Score.all.ransack(q_params)
     @pagy, @scores = pagy(@q.result)
   end
diff --git a/config/environments/development.rb b/config/environments/development.rb
index a06056e..513ecae 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -87,33 +87,8 @@ Rails.application.configure do # rubocop:disable Metrics/BlockLength
       #                             filter: ->(log) { !formatter.reject(log) })
     end
   elsif Rails.application.server?
-
     config.after_initialize do
-      source_location = Semantic::AnsiFormatter.instance_method(:initialize).source_location[0]
-      previous_mtime = File.stat(source_location).mtime
-      formatter = Semantic::AnsiFormatter.new
-      # SemanticLogger.clear_appenders!
-      SemanticLogger.add_appender(io: $stdout,
-                                  formatter:,
-                                  filter: ->(log) { !formatter.reject(log) })
-
-      [Semantic::AnsiFormatter, ApplicationController].each do |class_name|
-        Rails.autoloaders.main.on_load(class_name.to_s) do |klass, abspath|
-          if klass == Semantic::AnsiFormatter
-            mtime = File.stat(source_location).mtime
-            if previous_mtime != mtime
-              previous_mtime = mtime
-              SemanticLogger.clear_appenders!
-              formatter = Semantic::AnsiFormatter.new
-              SemanticLogger.add_appender(io: $stdout,
-                                          formatter:,
-                                          filter: lambda { |log|
-                                            !formatter.reject(log)
-                                          })
-            end
-          end
-        end
-      end
+      Semantic::DevLoader.new
     end
   end
 end
diff --git a/lib/semantic/ansi_formatter.rb b/lib/semantic/ansi_formatter.rb
index 4afc501..a427079 100644
--- a/lib/semantic/ansi_formatter.rb
+++ b/lib/semantic/ansi_formatter.rb
@@ -28,7 +28,7 @@ module Semantic
     end
 
     def call(log, logger)
-      # puts 'ok1'
+      # puts 'ok2'
       log = alter(log)
 
       self.log = log
diff --git a/lib/semantic/dev_loader.rb b/lib/semantic/dev_loader.rb
new file mode 100644
index 0000000..10d5454
--- /dev/null
+++ b/lib/semantic/dev_loader.rb
@@ -0,0 +1,19 @@
+module Semantic
+  # use the Zeitwerk autoloader to reattach_appender for development autoreloading feature
+  class DevLoader
+    def initialize
+      Rails.autoloaders.main.on_load('ApplicationController') { append_ansi_formatter }
+      append_ansi_formatter
+    end
+
+    private
+
+    def append_ansi_formatter
+      SemanticLogger.clear_appenders!
+      formatter = Semantic::AnsiFormatter.new
+      SemanticLogger.add_appender(io: $stdout,
+                                  formatter:,
+                                  filter: ->(log) { !formatter.reject(log) })
+    end
+  end
+end