diff --git a/lib/maintainer/update_users_active_state.rb b/lib/maintainer/update_users_active_state.rb
new file mode 100644
index 00000000..5334cf61
--- /dev/null
+++ b/lib/maintainer/update_users_active_state.rb
@@ -0,0 +1,44 @@
+# lib/update_users_active_state.rb
+module Maintainer
+  class UpdateUsersActiveState
+    def self.update_users_active_state
+      if ARGV.size < 2
+        puts 'Usage: rails runner lib/maintainer/update_users_active_state.rb <activate|deactivate> <name1> <name2> ...'
+        puts '<name> is screen_name'
+        exit 0
+      end
+
+      command = ARGV.shift
+      names = ARGV
+
+      case command
+      when 'activate'
+        change_active_state(names, activate: true)
+      when 'deactivate'
+        change_active_state(names, activate: false)
+      else
+        puts "Invalid command: #{command}. Use 'activate' or 'deactivate'."
+        exit 1
+      end
+    end
+
+    def change_active_state(names, activate:)
+      from_state = !activate
+      to_state = activate
+
+      users = User.where(screen_name: names, active: from_state)
+
+      if users.empty?
+        puts "No matching #{from_state ? 'activate' : 'deactivate'} users found."
+        exit 0
+      end
+
+      action = activate ? 'activate' : 'deactivate'
+      puts "Found #{users.count} #{from_state ? 'activate' : 'deactivate'} user(s) to #{action}:"
+      users.each { |u| puts "  - #{u.screen_name} (id: #{u.id})" }
+
+      users.update_all(active: to_state)
+      puts "Updated User.active:#{to_state}"
+    end
+  end
+end
diff --git a/lib/update_users_active_state.rb b/lib/update_users_active_state.rb
deleted file mode 100644
index 9d35b3cc..00000000
--- a/lib/update_users_active_state.rb
+++ /dev/null
@@ -1,39 +0,0 @@
-# lib/update_users_active_state.rb
-
-def change_active_state(names, activate:)
-  from_state = !activate
-  to_state = activate
-
-  users = User.where(screen_name: names, active: from_state)
-
-  if users.empty?
-    puts "No matching #{from_state ? 'activate' : 'deactivate'} users found."
-    exit 0
-  end
-
-  action = activate ? "activate" : "deactivate"
-  puts "Found #{users.count} #{from_state ? 'activate' : 'deactivate'} user(s) to #{action}:"
-  users.each { |u| puts "  - #{u.screen_name} (id: #{u.id})" }
-
-  users.update_all(active: to_state)
-  puts "Updated User.active:#{to_state}"
-end
-
-if ARGV.size < 2
-  puts "Usage: rails runner lib/update_users_active_state.rb <activate|deactivate> <name1> <name2> ..."
-  puts "<name> is screen_name"
-  exit 0
-end
-
-command = ARGV.shift
-names = ARGV
-
-case command
-when "activate"
-  change_active_state(names, activate: true)
-when "deactivate"
-  change_active_state(names, activate: false)
-else
-  puts "Invalid command: #{command}. Use 'activate' or 'deactivate'."
-  exit 1
-end