diff --git a/.examples/proxy/docker-compose.proxy-example.yml b/.examples/proxy/docker-compose.proxy-example.yml
index bdc0c80..7fa4a26 100644
--- a/.examples/proxy/docker-compose.proxy-example.yml
+++ b/.examples/proxy/docker-compose.proxy-example.yml
@@ -1,5 +1,5 @@
 ---
-version: "2"
+version: "3.8"
 
 services:
   zammad-nginx:
diff --git a/.examples/proxy/docker-compose.yml b/.examples/proxy/docker-compose.yml
index e2b2e1c..4fcb0a0 100644
--- a/.examples/proxy/docker-compose.yml
+++ b/.examples/proxy/docker-compose.yml
@@ -1,5 +1,5 @@
 ---
-version: '2'
+version: '3.8'
 
 services:
   frontend:
diff --git a/docker-compose.override-local.yml b/docker-compose.override-local.yml
index 375b373..b42070b 100644
--- a/docker-compose.override-local.yml
+++ b/docker-compose.override-local.yml
@@ -1,5 +1,5 @@
 ---
-version: '3'
+version: '3.8'
 
 services:
 
diff --git a/docker-compose.override.yml b/docker-compose.override.yml
index 3c1e74f..cccfd4d 100644
--- a/docker-compose.override.yml
+++ b/docker-compose.override.yml
@@ -1,5 +1,5 @@
 ---
-version: '3'
+version: '3.8'
 
 services:
 
diff --git a/docker-compose.yml b/docker-compose.yml
index b73c0c5..5438794 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,5 +1,5 @@
 ---
-version: '3'
+version: '3.8'
 
 x-shared:
   zammad-service: &zammad-service