diff --git a/patchfile.gemspec b/patchfile.gemspec
index 42881c4..b7b752d 100644
--- a/patchfile.gemspec
+++ b/patchfile.gemspec
@@ -113,7 +113,7 @@ Gem::Specification.new do |s|
   s.summary     = "Patch_file for Orbit"
   s.description = "Patch_file for Orbit"
   s.license     = "MIT"
-
+  s.add_dependency "nokogiri"
   s.files = Dir["{app,config,db,lib}/**/*", "MIT-LICENSE", "Rakefile", "README.rdoc"]
   s.test_files = Dir["test/**/*"]
 end