diff --git a/.env.example b/.env.example
index 3da7bc4..7070ead 100644
--- a/.env.example
+++ b/.env.example
@@ -1,3 +1,4 @@
+DB_TYPE = (mysql|sqlite|...)
 DB_HOST = database_host
 DB_NAME = database_name
 DB_USERNAME = database_username
diff --git a/src/data-source.ts b/src/data-source.ts
index 998f766..8cab226 100644
--- a/src/data-source.ts
+++ b/src/data-source.ts
@@ -1,7 +1,7 @@
 import "dotenv/config";
 import "reflect-metadata";
 import { DataSource } from "typeorm";
-import { DB_HOST, DB_USERNAME, DB_PASSWORD, DB_NAME } from "./env.defaults";
+import { DB_HOST, DB_USERNAME, DB_PASSWORD, DB_NAME, DB_TYPE } from "./env.defaults";
 
 import { user } from "./entity/user";
 import { refresh } from "./entity/refresh";
@@ -14,7 +14,7 @@ import { Invite1724579024939 } from "./migrations/1724579024939-invite";
 import { Permissions1724661484664 } from "./migrations/1724661484664-permissions";
 
 const dataSource = new DataSource({
-  type: "mysql",
+  type: DB_TYPE as any,
   host: process.env.NODE_ENV || process.env.DBMODE ? "localhost" : DB_HOST,
   port: 3306,
   username: DB_USERNAME,
diff --git a/src/env.defaults.ts b/src/env.defaults.ts
index 0422e88..82f5b75 100644
--- a/src/env.defaults.ts
+++ b/src/env.defaults.ts
@@ -1,6 +1,7 @@
 import "dotenv/config";
 import ms from "ms";
 
+export const DB_TYPE = process.env.DB_TYPE ?? "mysql";
 export const DB_HOST = process.env.DB_HOST ?? "";
 export const DB_NAME = process.env.DB_NAME ?? "";
 export const DB_USERNAME = process.env.DB_USERNAME ?? "";
@@ -21,6 +22,7 @@ export const MAIL_SECURE = process.env.MAIL_SECURE ?? "false";
 export const CLUB_NAME = process.env.CLUB_NAME ?? "";
 
 export function configCheck() {
+  if (DB_TYPE == "" ?? typeof DB_TYPE != "string") throw new Error("set valid value to DB_TYPE");
   if (DB_HOST == "" ?? typeof DB_HOST != "string") throw new Error("set valid value to DB_HOST");
   if (DB_NAME == "" ?? typeof DB_NAME != "string") throw new Error("set valid value to DB_NAME");
   if (DB_USERNAME == "" ?? typeof DB_USERNAME != "string") throw new Error("set valid value to DB_USERNAME");