diff --git a/bun.lockb b/bun.lockb
index 234ac1b..71d34a3 100755
Binary files a/bun.lockb and b/bun.lockb differ
diff --git a/package.json b/package.json
index cb97f89..6f1e4bb 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
   },
   "devDependencies": {
     "@types/node": "^20.6.0",
-    "@types/supertest": "^2.0.12",
+    "@types/supertest": "^6.0.0",
     "@vitest/coverage-v8": "^3.0.0",
     "bumpp": "^10.0.0",
     "gh-changelogen": "^0.2.8",
diff --git a/spec/integration.spec.ts b/spec/integration.spec.ts
index a3d4350..3f4520b 100644
--- a/spec/integration.spec.ts
+++ b/spec/integration.spec.ts
@@ -10,12 +10,11 @@ import {
 } from '../src/index.ts'
 
 import type { App, H3Event } from 'h3'
-import type { SuperTest, Test } from 'supertest'
 import type { CoreContext } from '@intlify/core'
 import type { DefineLocaleMessage } from '../src/index.ts'
 
 let app: App
-let request: SuperTest<Test>
+let request: ReturnType<typeof supertest>
 
 afterEach(() => {
   vi.resetAllMocks()