diff --git a/docker-compose.yml b/docker-compose.yml
index b08665d..8b8352d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -10,7 +10,7 @@ services:
     volumes:
       - postgres_data:/var/lib/postgresql/data
     healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U trumpsignal -d trumpsignal"]
+      test: ["CMD-SHELL", "pg_isready -U $SERVICE_USER_POSTGRES -d trumpsignal"]
       interval: 5s
       timeout: 5s
       retries: 20          # up to 100s total wait