diff --git a/docs/compose/docker-compose.yml b/docs/compose/docker-compose.yml
index 3b964449..4c997c4c 100644
--- a/docs/compose/docker-compose.yml
+++ b/docs/compose/docker-compose.yml
@@ -1,6 +1,5 @@
 # WARNING: this file is being deprecated over the new setup utility, found at https://setup.mailu.io
 
-version: '2'
 
 services:
 
diff --git a/docs/docker-compose.yml b/docs/docker-compose.yml
index 9c5d2473..eccc14a1 100644
--- a/docs/docker-compose.yml
+++ b/docs/docker-compose.yml
@@ -1,7 +1,6 @@
 # This file is used to test the mailu/docs website
 # Deployment files can be found on github.com/mailu/infra
 
-version: '3'
 
 services:
   docs:
diff --git a/setup/docker-compose.yml b/setup/docker-compose.yml
index 9c93fd6f..680dd9ab 100644
--- a/setup/docker-compose.yml
+++ b/setup/docker-compose.yml
@@ -1,7 +1,6 @@
 # This file is used to test the mailu/setup utility
 # Deployment files can be found on github.com/mailu/infra
 
-version: '3.6'
 
 services:
   redis:
diff --git a/setup/flavors/compose/docker-compose.yml b/setup/flavors/compose/docker-compose.yml
index 8cd374cd..3eeba1d4 100644
--- a/setup/flavors/compose/docker-compose.yml
+++ b/setup/flavors/compose/docker-compose.yml
@@ -3,8 +3,6 @@
 # Please read the documentation before attempting any change.
 # Generated for {{ flavor }} flavor
 
-version: '2.2'
-
 services:
 
   # External dependencies
diff --git a/tests/compose/api/docker-compose.yml b/tests/compose/api/docker-compose.yml
index 384e89cd..03879edb 100644
--- a/tests/compose/api/docker-compose.yml
+++ b/tests/compose/api/docker-compose.yml
@@ -2,7 +2,6 @@
 # Please read the documentation before attempting any change.
 # Generated for compose flavor
 
-version: '3.6'
 
 services:
 
diff --git a/tests/compose/core/docker-compose.yml b/tests/compose/core/docker-compose.yml
index 384e89cd..03879edb 100644
--- a/tests/compose/core/docker-compose.yml
+++ b/tests/compose/core/docker-compose.yml
@@ -2,7 +2,6 @@
 # Please read the documentation before attempting any change.
 # Generated for compose flavor
 
-version: '3.6'
 
 services:
 
diff --git a/tests/compose/fetchmail/docker-compose.yml b/tests/compose/fetchmail/docker-compose.yml
index 067532fa..edd4140e 100644
--- a/tests/compose/fetchmail/docker-compose.yml
+++ b/tests/compose/fetchmail/docker-compose.yml
@@ -2,7 +2,6 @@
 # Please read the documentation before attempting any change.
 # Generated for compose flavor
 
-version: '3.6'
 
 services:
 
diff --git a/tests/compose/filters/docker-compose.yml b/tests/compose/filters/docker-compose.yml
index 5a508d58..2d2562a4 100644
--- a/tests/compose/filters/docker-compose.yml
+++ b/tests/compose/filters/docker-compose.yml
@@ -2,7 +2,6 @@
 # Please read the documentation before attempting any change.
 # Generated for compose flavor
 
-version: '3.6'
 
 services:
 
diff --git a/tests/compose/webdav/docker-compose.yml b/tests/compose/webdav/docker-compose.yml
index 1391b68d..78bce9d7 100644
--- a/tests/compose/webdav/docker-compose.yml
+++ b/tests/compose/webdav/docker-compose.yml
@@ -2,7 +2,6 @@
 # Please read the documentation before attempting any change.
 # Generated for compose flavor
 
-version: '3.6'
 
 services:
 
diff --git a/tests/compose/webmail/docker-compose.yml b/tests/compose/webmail/docker-compose.yml
index d61621d3..0fdc3e5f 100644
--- a/tests/compose/webmail/docker-compose.yml
+++ b/tests/compose/webmail/docker-compose.yml
@@ -2,7 +2,6 @@
 # Please read the documentation before attempting any change.
 # Generated for compose flavor
 
-version: '3.6'
 
 services: