diff --git a/.changeset/ninety-cloths-taste.md b/.changeset/ninety-cloths-taste.md
new file mode 100644
index 00000000..b47321d5
--- /dev/null
+++ b/.changeset/ninety-cloths-taste.md
@@ -0,0 +1,5 @@
+---
+'@hono/cloudflare-access': patch
+---
+
+Add explicit `MiddlewareHandler` return type
diff --git a/packages/cloudflare-access/src/index.ts b/packages/cloudflare-access/src/index.ts
index 0f1362c3..f1eb760f 100644
--- a/packages/cloudflare-access/src/index.ts
+++ b/packages/cloudflare-access/src/index.ts
@@ -1,4 +1,4 @@
-import type { Context } from 'hono'
+import type { Context, MiddlewareHandler } from 'hono'
 import { getCookie } from 'hono/cookie'
 import { createMiddleware } from 'hono/factory'
 import { HTTPException } from 'hono/http-exception'
@@ -33,7 +33,7 @@ declare module 'hono' {
   }
 }
 
-export const cloudflareAccess = (accessTeamName: string) => {
+export const cloudflareAccess = (accessTeamName: string): MiddlewareHandler => {
   // This var will hold already imported jwt keys, this reduces the load of importing the key on every request
   let cacheKeys: Record<string, CryptoKey> = {}
   let cacheExpiration = 0
diff --git a/packages/cloudflare-access/tsconfig.build.json b/packages/cloudflare-access/tsconfig.build.json
index 4dcca72d..8a69eb0f 100644
--- a/packages/cloudflare-access/tsconfig.build.json
+++ b/packages/cloudflare-access/tsconfig.build.json
@@ -5,6 +5,7 @@
     "outDir": "dist",
     "tsBuildInfoFile": "dist/tsconfig.build.tsbuildinfo",
     "emitDeclarationOnly": false,
+    "isolatedDeclarations": true,
     "types": ["@cloudflare/workers-types"]
   },
   "include": ["src/**/*.ts"],