diff --git a/lib/twitter.js b/lib/twitter.js
index aea61bc..dc48baa 100644
--- a/lib/twitter.js
+++ b/lib/twitter.js
@@ -93,6 +93,10 @@ TwitterApi.prototype.follow = function(screenName){
   return this.post('friendships/create.json',{screen_name: screenName, follow: true});
 };
 
+TwitterApi.prototype.unfollow = function(screenName){
+  return this.post('friendships/destroy.json',{screen_name: screenName});
+};
+
 TwitterApi.prototype.getLists = function(user) {
   if (user) {
     return this.get("lists/list.json", {