diff --git a/.changeset/unlucky-drinks-grab.md b/.changeset/unlucky-drinks-grab.md
new file mode 100644
index 00000000..d0c711a4
--- /dev/null
+++ b/.changeset/unlucky-drinks-grab.md
@@ -0,0 +1,5 @@
+---
+'@hono/zod-validator': minor
+---
+
+feat: Support Hono v3.1.0
diff --git a/packages/zod-validator/package.json b/packages/zod-validator/package.json
index 0ca60366..71274c31 100644
--- a/packages/zod-validator/package.json
+++ b/packages/zod-validator/package.json
@@ -32,7 +32,7 @@
     "zod": "^3.19.1"
   },
   "devDependencies": {
-    "hono": "^3.0.0",
+    "hono": "^3.1.0",
     "zod": "3.19.1"
   }
-}
\ No newline at end of file
+}
diff --git a/packages/zod-validator/src/index.ts b/packages/zod-validator/src/index.ts
index 8cc469c3..bc599b6d 100644
--- a/packages/zod-validator/src/index.ts
+++ b/packages/zod-validator/src/index.ts
@@ -18,7 +18,11 @@ export const zValidator = <
   target: Target,
   schema: T,
   hook?: Hook<z.infer<T>>
-): MiddlewareHandler<E, P, { [K in Target]: z.infer<T> }> =>
+): MiddlewareHandler<
+  E,
+  P,
+  { in: { [K in Target]: z.input<T> }; out: { [K in Target]: z.output<T> } }
+> =>
   validator(target, (value, c) => {
     const result = schema.safeParse(value)
 
diff --git a/packages/zod-validator/test/index.test.ts b/packages/zod-validator/test/index.test.ts
index 55680565..9ef8af04 100644
--- a/packages/zod-validator/test/index.test.ts
+++ b/packages/zod-validator/test/index.test.ts
@@ -33,7 +33,7 @@ describe('Basic', () => {
           }
         }
         output: {
-          success: boolean
+          success: true
           message: string
         }
       }
diff --git a/yarn.lock b/yarn.lock
index c42571ef..ba49dfb5 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -5232,10 +5232,10 @@ hono@^3.0.2:
   resolved "https://registry.yarnpkg.com/hono/-/hono-3.0.2.tgz#807a1b0514c6563917d8c278e6da7101bdac1d19"
   integrity sha512-jhb0eCiUTOzbOXZyXQCOk1gf3MKjV4ZXY3PRT6lzma0XPsnnHuDOHYF7RCMHYe7jhl4Y0IAzrmWXneXhOMHypA==
 
-hono@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/hono/-/hono-3.0.3.tgz#26b62bece753941dd3d290d03ff3338f71535017"
-  integrity sha512-6Lb/TPH7Me1GAjFR7k/duzTcHS5y+rxFyL6Ky0kYQQlu92l99t53CFMVcdNUpHeStarPOs4Uzl413zIvxaI15A==
+hono@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/hono/-/hono-3.1.0.tgz#4b29bcaddc489015b99d0a89b68133ccf72b2cf1"
+  integrity sha512-5hVyzp3mrAjxRwy6Uj7su0pIISGTKVX2tE4YiYO81V3w1KoYZEmz3g6X6P9nRLQmaABDWXmnL9GqEzBhTAPeog==
 
 hosted-git-info@^2.1.4:
   version "2.8.9"