diff --git a/lib/hashie/extensions/parsers/yaml_erb_parser.rb b/lib/hashie/extensions/parsers/yaml_erb_parser.rb
index b3119393..e1beb6e7 100644
--- a/lib/hashie/extensions/parsers/yaml_erb_parser.rb
+++ b/lib/hashie/extensions/parsers/yaml_erb_parser.rb
@@ -1,5 +1,6 @@
 require 'yaml'
 require 'erb'
+require 'pathname'
 module Hashie
   module Extensions
     module Parsers