diff --git a/docker-compose.yml.j2 b/docker-compose.yml.j2
index 961a5c8..e99cbe8 100644
--- a/docker-compose.yml.j2
+++ b/docker-compose.yml.j2
@@ -1,5 +1,4 @@
 ---
-version: "2.1"
 services:
   ddclient:
     image: linuxserver/ddclient