diff --git a/src/context.ts b/src/context.ts
index f0b9cd34..d409eca2 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -4,8 +4,7 @@ import { isAbsoluteURL } from './utils/url'
 
 type Headers = Record<string, string>
 export type Data = string | ArrayBuffer | ReadableStream
-
-export type Env = Record<string, any>
+type Env = Record<string, any>
 
 export class Context<RequestParamKeyType extends string = string, E = Env> {
   req: Request<RequestParamKeyType>
diff --git a/src/hono.ts b/src/hono.ts
index 3909268b..f6d1d2f3 100644
--- a/src/hono.ts
+++ b/src/hono.ts
@@ -1,12 +1,12 @@
 import { compose } from './compose'
 import { Context } from './context'
-import type { Env } from './context'
 import { extendRequestPrototype } from './request'
 import type { Router } from './router'
 import { METHOD_NAME_ALL, METHOD_NAME_ALL_LOWERCASE } from './router'
 import { TrieRouter } from './router/trie-router' // Default Router
 import { getPathFromURL, mergePath } from './utils/url'
 
+type Env = Record<string, any>
 export type Handler<RequestParamKeyType extends string = string, E = Env> = (
   c: Context<RequestParamKeyType, E>,
   next: Next
diff --git a/src/index.ts b/src/index.ts
index d4879754..a9ad7002 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -4,7 +4,6 @@
 import { Hono } from './hono'
 export type { Handler, Next } from './hono'
 export { Context } from './context'
-export type { Env } from './context'
 
 declare module './hono' {
   interface Hono {
diff --git a/src/middleware/serve-static/serve-static.ts b/src/middleware/serve-static/serve-static.ts
index 26999cb4..69244db0 100644
--- a/src/middleware/serve-static/serve-static.ts
+++ b/src/middleware/serve-static/serve-static.ts
@@ -1,4 +1,4 @@
-import type { Context, Env } from '../../context'
+import type { Context } from '../../context'
 import type { Handler, Next } from '../../hono'
 import { getContentFromKVAsset } from '../../utils/cloudflare'
 import { getFilePath } from '../../utils/filepath'
@@ -14,7 +14,7 @@ export type ServeStaticOptions = {
 const DEFAULT_DOCUMENT = 'index.html'
 
 // This middleware is available only on Cloudflare Workers.
-export const serveStatic = (options: ServeStaticOptions = { root: '' }): Handler<string, Env> => {
+export const serveStatic = (options: ServeStaticOptions = { root: '' }): Handler => {
   return async (c: Context, next: Next): Promise<Response | undefined> => {
     // Do nothing if Response is already set
     if (c.res && c.finalized) {
diff --git a/src/mod.ts b/src/mod.ts
index d3b83c30..f20c3c96 100644
--- a/src/mod.ts
+++ b/src/mod.ts
@@ -13,7 +13,6 @@ declare global {
 
 export type { Handler, Next } from './hono'
 export { Context } from './context'
-export type { Env } from './context'
 export { Hono }
 
 // Router