diff --git a/lib/rss.js b/lib/rss.js
index a8110b9..c24f23b 100755
--- a/lib/rss.js
+++ b/lib/rss.js
@@ -108,6 +108,10 @@ function generateXML (data){
         version: '2.0'
     };
 
+    for(var name in data.customNamespaces) {
+      _attr['xmlns:' + name] = data.customNamespaces[name];
+    }
+
     //only add namespace if GeoRSS is true
     if(data.geoRSS){
         _attr['xmlns:geo'] = 'http://www.w3.org/2003/01/geo/wgs84_pos#';
@@ -142,6 +146,7 @@ function RSS (options, items) {
     this.ttl            = options.ttl;
     //option to return feed as GeoRSS is set automatically if feed.lat/long is used
     this.geoRSS         = options.geoRSS || false;
+    this.customNamespaces = options.customNamespaces || {};
     this.custom         = options.custom || [];
     this.items          = items || [];