diff --git a/.changeset/nervous-berries-invent.md b/.changeset/nervous-berries-invent.md
new file mode 100644
index 00000000..cd2ecebe
--- /dev/null
+++ b/.changeset/nervous-berries-invent.md
@@ -0,0 +1,5 @@
+---
+'@hono/zod-openapi': patch
+---
+
+change: Export Hook in @hono/zod-openapi
diff --git a/packages/zod-openapi/src/index.ts b/packages/zod-openapi/src/index.ts
index 01fcd22f..67fb90dc 100644
--- a/packages/zod-openapi/src/index.ts
+++ b/packages/zod-openapi/src/index.ts
@@ -134,7 +134,7 @@ type OutputType<R extends RouteConfig> = R['responses'] extends Record<infer _,
     : {}
   : {}
 
-type Hook<T, E extends Env, P extends string, O> = (
+export type Hook<T, E extends Env, P extends string, O> = (
   result:
     | {
         success: true