diff --git a/times-hub-api/Makefile b/times-hub-api/Makefile
index c4c4c32..2f11ac1 100644
--- a/times-hub-api/Makefile
+++ b/times-hub-api/Makefile
@@ -31,6 +31,11 @@ db-build: ## Build docker compose
 db-up: ## Run docker compose up in the background
 	docker compose ${COMPOSE_ARGS} up -d
 
+.PHONY: db-exec
+db-exec:
+	docker compose ${COMPOSE_ARGS} exec database bash -c \
+	'PGPASSWORD='times-hub' psql --username times-hub --dbname workspaces'
+
 PHNEY: db-down
 db-down: ## Run docker compose down
 	docker compose ${COMPOSE_ARGS} down
diff --git a/times-hub-api/README.md b/times-hub-api/README.md
index 52b0f38..e2c3706 100644
--- a/times-hub-api/README.md
+++ b/times-hub-api/README.md
@@ -7,7 +7,7 @@
 `.env`
 
 ```.env
-DATABASE_URL="postgres://admin:admin@localhost:5432/workspaces"
+DATABASE_URL="postgres://times-hub:times-hub@localhost:5432/workspaces"
 ```
 
 ```sh
diff --git a/times-hub-api/docker/docker-compose.yml b/times-hub-api/docker/docker-compose.yml
index 3dc0468..a921f38 100644
--- a/times-hub-api/docker/docker-compose.yml
+++ b/times-hub-api/docker/docker-compose.yml
@@ -10,8 +10,8 @@ services:
     volumes:
       - pgdata:/var/lib/postgresql/data
     environment:
-      POSTGRES_PASSWORD: admin
-      POSTGRES_USER: admin
+      POSTGRES_PASSWORD: times-hub
+      POSTGRES_USER: times-hub
       POSTGRES_DB: workspaces
       TZ: Asia/Tokyo
     restart: always