diff --git a/readme.md b/readme.md
index e0d980d..d1ee3e6 100644
--- a/readme.md
+++ b/readme.md
@@ -28,8 +28,7 @@ go run main.go
 
 ### Docker compose
 
-```
-version: '3.9'
+```yaml
 services:
     spotify-ws:
         container_name: spotify-ws
@@ -45,7 +44,7 @@ services:
 
 ### Docker run
 
-```
+```sh
 docker run \
   -d \
   --name=spotify-ws \