diff --git a/lib/exiftool.rb b/lib/exiftool.rb
index f4b5526..dc3b54f 100644
--- a/lib/exiftool.rb
+++ b/lib/exiftool.rb
@@ -4,6 +4,7 @@
 require 'shellwords'
 require 'exiftool/result'
 require 'forwardable'
+require 'pathname'
 
 # Exiftool Class
 class Exiftool