diff --git a/.changeset/unlucky-cheetahs-fry.md b/.changeset/unlucky-cheetahs-fry.md
new file mode 100644
index 00000000..694bf895
--- /dev/null
+++ b/.changeset/unlucky-cheetahs-fry.md
@@ -0,0 +1,5 @@
+---
+'@hono/zod-openapi': patch
+---
+
+fix(zod-openapi): infer OpenAPIObjectConfig
diff --git a/packages/zod-openapi/src/index.ts b/packages/zod-openapi/src/index.ts
index 9d3edee2..81050ca5 100644
--- a/packages/zod-openapi/src/index.ts
+++ b/packages/zod-openapi/src/index.ts
@@ -12,7 +12,6 @@ import {
   OpenApiGeneratorV31,
   extendZodWithOpenApi,
 } from '@asteasolutions/zod-to-openapi'
-import type { OpenAPIObjectConfig } from '@asteasolutions/zod-to-openapi/dist/v3.0/openapi-generator'
 import { zValidator } from '@hono/zod-validator'
 import { Hono } from 'hono'
 import type {
@@ -252,6 +251,10 @@ export type RouteHook<
   RouteConfigToTypedResponse<R> | Response | Promise<Response> | void | Promise<void>
 >
 
+type OpenAPIObjectConfig = Parameters<
+  InstanceType<typeof OpenApiGeneratorV3>['generateDocument']
+>[0]
+
 export type OpenAPIObjectConfigure<E extends Env, P extends string> =
   | OpenAPIObjectConfig
   | ((context: Context<E, P>) => OpenAPIObjectConfig)