diff --git a/gpx.gemspec b/gpx.gemspec
index 10c352c..d13c94b 100644
--- a/gpx.gemspec
+++ b/gpx.gemspec
@@ -12,4 +12,5 @@ Gem::Specification.new do |s|
   s.email = "doug.fales@gmail.com"
   s.homepage = "http://dougfales.github.com/gpx/"
   s.rubyforge_project = "gpx"
+  s.add_dependency('hpricot')
 end