diff --git a/compose.yaml b/compose.yaml
index 4341e0e..ea21ecd 100644
--- a/compose.yaml
+++ b/compose.yaml
@@ -26,7 +26,7 @@ services:
     environment:
       POSTGRES_DB: tirreno
       POSTGRES_USER: tirreno
-      POSTGRES_PASSWORD: secret
+      POSTGRES_PASSWORD: $secret
     volumes:
       - tirreno-db:/var/lib/postgresql/data
     networks: