diff --git a/docker-compose.nginx.yml b/docker-compose.nginx.yml
index 70f5d50..3c451e9 100644
--- a/docker-compose.nginx.yml
+++ b/docker-compose.nginx.yml
@@ -1,5 +1,3 @@
-version: "2.4"
-
 services:
   nginx:
     depends_on:
diff --git a/docker-compose.without-nginx.yml b/docker-compose.without-nginx.yml
index 4e9bf5b..cccb83d 100644
--- a/docker-compose.without-nginx.yml
+++ b/docker-compose.without-nginx.yml
@@ -1,5 +1,3 @@
-version: "2.4"
-
 services:
   mattermost:
     ports:
diff --git a/docker-compose.yml b/docker-compose.yml
index e50d7a9..aec5476 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -1,7 +1,4 @@
 # https://docs.docker.com/compose/environment-variables/
-
-version: "2.4"
-
 services:
   postgres:
     image: postgres:${POSTGRES_IMAGE_TAG}