diff --git a/cmd/create-daemon.rb b/cmd/create-daemon.rb
index baa4ef2..14176e8 100755
--- a/cmd/create-daemon.rb
+++ b/cmd/create-daemon.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+require 'etc'
+
 module Homebrew
   module_function