@@ -1438,15 +1438,21 @@ public Task<FullPlaylist> CreatePlaylistAsync(string userId, string playlistName
         /// <param name="playlistId">The Spotify ID for the playlist.</param>
         /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
         /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
+        /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client. Note: You can only set collaborative to true on non-public playlists.</param>
+        /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
-        public ErrorResponse UpdatePlaylist(string userId, string playlistId, string newName = null, bool? newPublic = null)
+        public ErrorResponse UpdatePlaylist(string userId, string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
         {
             JObject body = new JObject();
             if (newName != null)
                 body.Add("name", newName);
             if (newPublic != null)
                 body.Add("public", newPublic);
+            if (newCollaborative != null)
+                body.Add("collaborative", newCollaborative);
+            if (newDescription != null)
+                body.Add("description", newDescription);
             return UploadData<ErrorResponse>(_builder.UpdatePlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
         }