diff --git a/README.md b/README.md
index a9032a1..d344ded 100644
--- a/README.md
+++ b/README.md
@@ -380,8 +380,6 @@ then appending it to the `COMPOSE_FILE` environment variable: `COMPOSE_FILE=dock
 For example, use a [different VPN provider](https://github.com/bubuntux/nordvpn):
 
 ```yml
-version: '3.9'
-
 services:
   vpn:
     image: ghcr.io/bubuntux/nordvpn
@@ -469,7 +467,6 @@ If you want to use separate paths for torrents download and long term storage, t
 set your `docker-compose.override.yml` to:
 
 ```yml
-version: "3.9"
 services:
   sonarr:
     volumes:
diff --git a/adguardhome/docker-compose.yml b/adguardhome/docker-compose.yml
index 329e8e4..c21852e 100644
--- a/adguardhome/docker-compose.yml
+++ b/adguardhome/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.9'
-
 services:
   dhcp-relay:
     image: modem7/dhcprelay:latest
diff --git a/docker-compose.yml b/docker-compose.yml
index 6cda327..af2ce69 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.9'
-
 services:
   traefik:
     image: traefik:v2.10
diff --git a/tandoor/docker-compose.yml b/tandoor/docker-compose.yml
index 97fee6a..01c9286 100644
--- a/tandoor/docker-compose.yml
+++ b/tandoor/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.9'
-
 services:
   tandoor:
     image: vabene1111/recipes:latest