diff --git a/cluster/docker-compose-clustered.yml b/cluster/docker-compose-clustered.yml
index b44f06d..e68fdb6 100644
--- a/cluster/docker-compose-clustered.yml
+++ b/cluster/docker-compose-clustered.yml
@@ -1,5 +1,3 @@
-version: '3.7'
-
 services:
 
   db:
diff --git a/cluster_with_federation/docker-compose-clustered.yml b/cluster_with_federation/docker-compose-clustered.yml
index 3ccc6ae..0f0a429 100644
--- a/cluster_with_federation/docker-compose-clustered.yml
+++ b/cluster_with_federation/docker-compose-clustered.yml
@@ -1,5 +1,3 @@
-version: '3.7'
-
 services:
 
   db:
diff --git a/proxy/docker-compose.yml b/proxy/docker-compose.yml
index a32ab26..5526094 100644
--- a/proxy/docker-compose.yml
+++ b/proxy/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.7'
-
 services:
 
   db:
diff --git a/simple/docker-compose.yml b/simple/docker-compose.yml
index c850136..34017ff 100644
--- a/simple/docker-compose.yml
+++ b/simple/docker-compose.yml
@@ -1,5 +1,3 @@
-version: '3.7'
-
 services:
 
   db: