diff --git a/SWXMLHash.podspec b/SWXMLHash.podspec
index fb7314a..cac7d63 100644
--- a/SWXMLHash.podspec
+++ b/SWXMLHash.podspec
@@ -21,5 +21,5 @@ Pod::Spec.new do |s|
     git: 'https://github.com/drmohundro/SWXMLHash.git',
     tag: s.version
   }
-  s.source_files = 'Source/*.swift'
+  s.source_files = 'Source/**/*.swift'
 end