diff --git a/.env.example b/.env.example
index 890f158..74acf4d 100644
--- a/.env.example
+++ b/.env.example
@@ -2,7 +2,9 @@ DATABASE_URL=postgres://postgres:postgres@127.0.0.1:5432/postgres
 
 # Cloud SQL Auth Proxy (Unix socket) — set these instead of DATABASE_URL on Cloud Run.
 # INSTANCE_UNIX_SOCKET=/cloudsql/PROJECT:REGION:INSTANCE
+# DB_USER=your_db_user
 # DB_PASSWORD=****
+# DB_NAME=your_db_name
 # DB_USE_UNIX_SOCKET=true  # set to "false" to force DATABASE_URL even when INSTANCE_UNIX_SOCKET is set
 
 # `openssl rand -hex 32`