diff --git a/watchtower/docker-compose.yml b/watchtower/docker-compose.yml
index 112087f..7602162 100644
--- a/watchtower/docker-compose.yml
+++ b/watchtower/docker-compose.yml
@@ -1,3 +1,4 @@
+---
 services:
   watchtower:
     #command: --cleanup --label-enable --http-api-periodic-polls --http-api-metrics
@@ -46,4 +47,4 @@ services:
     - /etc/timezone:/etc/timezone:ro
     - /etc/localtime:/etc/localtime:ro
     - /share/docker_data/watchtower/.docker/config.json:/config.json
-version: '3'
+