key_tree.gemspec in key_tree-0.3.1 vs key_tree.gemspec in key_tree-0.3.2

@@ -1,6 +1,6 @@
 
-lib = File.expand_path('../lib', __FILE__)
+lib = File.expand_path('lib', __dir__)
 $LOAD_PATH.unshift(lib) unless $LOAD_PATH.include?(lib)
 require 'key_tree/version'
 
 Gem::Specification.new do |spec|
   spec.name          = 'key_tree'