diff --git a/mkdocs/docs/api/playlist.md b/mkdocs/docs/api/playlist.md
index 9136a1f..ea4b37f 100644
--- a/mkdocs/docs/api/playlist.md
+++ b/mkdocs/docs/api/playlist.md
@@ -3,6 +3,10 @@
 ## Playlist List
 **GET** `/api/playlist/`
 
+Parameter:
+
+- playlist_type: filter py playlist type.
+
 Subscribe/Unsubscribe to a list of playlists:  
 **POST** `/api/playlist/`
 ```json
@@ -16,6 +20,8 @@ Subscribe/Unsubscribe to a list of playlists:
 ## Playlist Item
 **GET** `/api/playlist/<playlist_id>/`
 
+**POST**: Update Playlist item, only valid for custom playlists
+
 Delete playlist, metadata only:  
 **DELETE** `/api/playlist/<playlist_id>/`  
 Delete playlist, also delete all videos in playlist: