diff --git a/packages/zod-openapi/package.json b/packages/zod-openapi/package.json
index e4f62d10..c26e6958 100644
--- a/packages/zod-openapi/package.json
+++ b/packages/zod-openapi/package.json
@@ -37,7 +37,6 @@
     "zod": "3.*"
   },
   "devDependencies": {
-    "@hono/zod-validator": "^0.1.9",
     "hono": "^3.7.2",
     "zod": "^3.22.1"
   },
diff --git a/packages/zod-openapi/test/index.test.ts b/packages/zod-openapi/test/index.test.ts
index a0e20d1c..be036d76 100644
--- a/packages/zod-openapi/test/index.test.ts
+++ b/packages/zod-openapi/test/index.test.ts
@@ -263,18 +263,20 @@ describe('Query', () => {
 
 describe('Header', () => {
   const HeaderSchema = z.object({
+    authorization: z.string(),
     'x-request-id': z.string().uuid(),
   })
 
-  const PingSchema = z
+  const PongSchema = z
     .object({
       'x-request-id': z.string().uuid(),
+      authorization: z.string(),
     })
     .openapi('Post')
 
   const route = createRoute({
     method: 'get',
-    path: '/ping',
+    path: '/pong',
     request: {
       headers: HeaderSchema,
     },
@@ -282,40 +284,42 @@ describe('Header', () => {
       200: {
         content: {
           'application/json': {
-            schema: PingSchema,
+            schema: PongSchema,
           },
         },
-        description: 'Ping',
+        description: 'Pong',
       },
     },
   })
 
   const app = new OpenAPIHono()
 
-  app.openapi(route, (c) => {
+  const controller = (c) => {
     const headerData = c.req.valid('header')
-    const xRequestId = headerData['x-request-id']
-    return c.jsonT({
-      'x-request-id': xRequestId,
-    })
-  })
+    return c.jsonT(headerData)
+  }
+
+  app.openapi(route, controller)
 
   it('Should return 200 response with correct contents', async () => {
-    const res = await app.request('/ping', {
+    const res = await app.request('/pong', {
       headers: {
         'x-request-id': '6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b',
+        Authorization: 'Bearer helloworld',
       },
     })
     expect(res.status).toBe(200)
     expect(await res.json()).toEqual({
       'x-request-id': '6ec0bd7f-11c0-43da-975e-2a8ad9ebae0b',
+      'authorization': 'Bearer helloworld',
     })
   })
 
   it('Should return 400 response with correct contents', async () => {
-    const res = await app.request('/ping', {
+    const res = await app.request('/pong', {
       headers: {
         'x-request-id': 'invalid-strings',
+        Authorization: 'Bearer helloworld',
       },
     })
     expect(res.status).toBe(400)
diff --git a/yarn.lock b/yarn.lock
index fc56b38a..00e53d35 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1765,11 +1765,16 @@
   resolved "https://registry.yarnpkg.com/@sinclair/typebox/-/typebox-0.24.51.tgz#645f33fe4e02defe26f2f5c0410e1c094eac7f5f"
   integrity sha512-1P1OROm/rdubP5aFDSZQILU0vrLCJ4fvHt6EoqHEM+2D/G5MK3bIaymUKLit8Js9gbns5UyJnkP/TZROLw4tUA==
 
-"@sinclair/typebox@^0.25.16", "@sinclair/typebox@^0.25.24":
+"@sinclair/typebox@^0.25.16":
   version "0.25.24"
   resolved "https://registry.yarnpkg.com/@sinclair/typebox/-/typebox-0.25.24.tgz#8c7688559979f7079aacaf31aa881c3aa410b718"
   integrity sha512-XJfwUVUKDHF5ugKwIcxEgc9k8b7HbznCp6eUfWgu710hMPNIO4aw4/zB5RogDQz8nd6gyCDpU9O/m6qYEWY6yQ==
 
+"@sinclair/typebox@^0.31.15":
+  version "0.31.17"
+  resolved "https://registry.yarnpkg.com/@sinclair/typebox/-/typebox-0.31.17.tgz#f9ceed480957b919b203bb0b3e27bc559d1e8e19"
+  integrity sha512-GVYVHHOGINx+DT2DwjXoCQO0mRpztYKyb3d48tucuqhjhHpQYGp7Xx7dhhQGzILx/beuBrzfITMC7/5X7fw+UA==
+
 "@sindresorhus/is@^0.14.0":
   version "0.14.0"
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"