diff --git a/.examples/proxy/docker-compose.proxy-example.yml b/.examples/proxy/docker-compose.proxy-example.yml
index 7fa4a26..e852b4e 100644
--- a/.examples/proxy/docker-compose.proxy-example.yml
+++ b/.examples/proxy/docker-compose.proxy-example.yml
@@ -1,6 +1,4 @@
 ---
-version: "3.8"
-
 services:
   zammad-nginx:
     environment:
diff --git a/.examples/proxy/docker-compose.yml b/.examples/proxy/docker-compose.yml
index 4fcb0a0..8024d10 100644
--- a/.examples/proxy/docker-compose.yml
+++ b/.examples/proxy/docker-compose.yml
@@ -1,6 +1,4 @@
 ---
-version: '3.8'
-
 services:
   frontend:
     image: jwilder/nginx-proxy:alpine
diff --git a/docker-compose.override-local.yml b/docker-compose.override-local.yml
index ccd3a1c..f8e902d 100644
--- a/docker-compose.override-local.yml
+++ b/docker-compose.override-local.yml
@@ -1,5 +1,4 @@
 ---
-version: '3.8'
 
 services:
 
diff --git a/docker-compose.yml b/docker-compose.yml
index 0cedfa3..4292627 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,6 +1,4 @@
 ---
-version: '3.8'
-
 x-shared:
   zammad-service: &zammad-service
     environment: &zammad-environment