diff --git a/compose.yml b/compose.yml
index a2fb08f..e37ced2 100644
--- a/compose.yml
+++ b/compose.yml
@@ -24,9 +24,9 @@ services:
     container_name: db
     restart: always
     environment:
-      POSTGRES_USER: $DB_USER
-      POSTGRES_PASSWORD: $DB_PASSWORD
-      POSTGRES_DB: $DB_DBNAME
+      - POSTGRES_USER=${POSTGRES_USER}
+      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
+      - POSTGRES_DB=${POSTGRES_DB}
     volumes:
       - ./db:/var/lib/postgresql/data