diff --git a/playbooks/files/chaosknoten/configs/lists/compose/compose.yaml b/playbooks/files/chaosknoten/configs/lists/compose/compose.yaml
index c2b2084..162dd42 100644
--- a/playbooks/files/chaosknoten/configs/lists/compose/compose.yaml
+++ b/playbooks/files/chaosknoten/configs/lists/compose/compose.yaml
@@ -1,5 +1,3 @@
-version: '2'
-
 services:
   mailman-core:
     restart: unless-stopped
diff --git a/playbooks/roles/nextcloud/templates/compose.yaml.j2 b/playbooks/roles/nextcloud/templates/compose.yaml.j2
index 4bb4ae4..21bf15c 100644
--- a/playbooks/roles/nextcloud/templates/compose.yaml.j2
+++ b/playbooks/roles/nextcloud/templates/compose.yaml.j2
@@ -1,6 +1,4 @@
 ---
-version: "3.6"
-
 services:
   nextcloud:
     image: git.hamburg.ccc.de/ccchh/oci-images/nextcloud:28
diff --git a/playbooks/templates/chaosknoten/configs/ccchoir/compose.yaml.j2 b/playbooks/templates/chaosknoten/configs/ccchoir/compose.yaml.j2
index f7cc6e8..e4ab5b6 100644
--- a/playbooks/templates/chaosknoten/configs/ccchoir/compose.yaml.j2
+++ b/playbooks/templates/chaosknoten/configs/ccchoir/compose.yaml.j2
@@ -1,6 +1,5 @@
 ---
 # see https://github.com/hedgedoc/container/blob/master/docker-compose.yml
-version: "3.6"
 
 services:
   database:
diff --git a/playbooks/templates/chaosknoten/configs/engelsystem/compose.yaml.j2 b/playbooks/templates/chaosknoten/configs/engelsystem/compose.yaml.j2
index d2547bc..58886dc 100644
--- a/playbooks/templates/chaosknoten/configs/engelsystem/compose.yaml.j2
+++ b/playbooks/templates/chaosknoten/configs/engelsystem/compose.yaml.j2
@@ -1,5 +1,4 @@
 ---
-version: "3.6"
 services:
   es_server:
     image: es_server
diff --git a/playbooks/templates/chaosknoten/configs/grafana/compose.yaml.j2 b/playbooks/templates/chaosknoten/configs/grafana/compose.yaml.j2
index 31f3e4c..e235380 100644
--- a/playbooks/templates/chaosknoten/configs/grafana/compose.yaml.j2
+++ b/playbooks/templates/chaosknoten/configs/grafana/compose.yaml.j2
@@ -1,6 +1,4 @@
 ---
-version: "3.6"
-
 services:
 
   prometheus: