diff --git a/README.md b/README.md
index 6155e9e..7398d01 100644
--- a/README.md
+++ b/README.md
@@ -121,7 +121,9 @@ occurring, typical ones are file permission issues.
 
 Alternatively, for Docker Compose, you can use something like:
 
-```yaml
+```yml
+version: '3.7'
+services:
   tubesync:
     image: ghcr.io/meeb/tubesync:latest
     container_name: tubesync