diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b7fbed..630bcd7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,8 +2,17 @@
 
 ## 1.8.0
 - Support custom help message
+
+Create a `custom_help_message.txt` and uncomment the field in docker compose file.
+![Imgur](https://i.imgur.com/X5vGr6v.jpeg)
 - Support several whitelist room_id
 
+You can add as many as room_id that you hope the bot works on.
+
+`"room_id": ["!111111:matrix.qqs.tw", "!222222:matrix.qqs.tw"]` for `config.json`
+
+`ROOM_ID="!aaaaaaa:XXX.XXX,!bbbbbb:XXX.XXX"` for `.env`
+
 ## 1.7.2
 - Refactor gpt vision trigger method
 - !pic, !help, and gpt vision in thread chat
diff --git a/compose.yaml b/compose.yaml
index 0952f91..b7955bd 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -19,8 +19,3 @@ services:
       # - ./custom_help_message.txt:/app/custom_help_message.txt
       # import_keys path
       # - ./element-keys.txt:/app/element-keys.txt
-    networks:
-      - matrix_network
-
-networks:
-  matrix_network: