diff --git a/docker-compose.traefik.yml b/docker-compose.traefik.yml
index 8b7ab90..453a49b 100644
--- a/docker-compose.traefik.yml
+++ b/docker-compose.traefik.yml
@@ -1,7 +1,6 @@
 # For details and other explanations about this file refer to:
 # https://github.com/vrtmrz/obsidian-livesync/blob/main/docs/setup_own_server.md#traefik
 
-version: "2.1"
 services:
   couchdb:
     image: couchdb:latest
diff --git a/docs/setup_own_server.md b/docs/setup_own_server.md
index b444125..40dd20d 100644
--- a/docs/setup_own_server.md
+++ b/docs/setup_own_server.md
@@ -230,7 +230,6 @@ And, be sure to check the server log and be careful of malicious access.
 If you are using Traefik, this [docker-compose.yml](https://github.com/vrtmrz/obsidian-livesync/blob/main/docker-compose.traefik.yml) file (also pasted below) has all the right CORS parameters set. It assumes you have an external network called `proxy`.
 
 ```yaml
-version: "2.1"
 services:
   couchdb:
     image: couchdb:latest
diff --git a/docs/setup_own_server_cn.md b/docs/setup_own_server_cn.md
index 37c1d0c..1c88ed6 100644
--- a/docs/setup_own_server_cn.md
+++ b/docs/setup_own_server_cn.md
@@ -71,7 +71,6 @@ obsidian-livesync
 
 可以参照以下内容编辑 `docker-compose.yml`:
 ```yaml
-version: "2.1"
 services:
   couchdb:
     image: couchdb