diff --git a/is_it_up.gemspec b/is_it_up.gemspec
index 834bfbc..9589d99 100644
--- a/is_it_up.gemspec
+++ b/is_it_up.gemspec
@@ -1,4 +1,5 @@
 require_relative 'lib/is_it_up/version'
+require 'pathname'
 
 Gem::Specification.new do |spec|
   spec.name          = "is_it_up"