diff --git a/README.md b/README.md
index cb712f6..defcd02 100644
--- a/README.md
+++ b/README.md
@@ -44,11 +44,30 @@ To do this, simply add the ref name to the sub-directory.
 
    > [🌍 Environment Variables](#-environment-variables)
 
-2. Run this command
+2. Follow the steps depending on the runtime
 
-   ```sh
-   deno run -A jsr:@5ouma/reproxy
-   ```
+   - [🦕 Deno](https://deno.com)
+
+     1. Run this command
+
+        ```sh
+        deno run -A jsr:@5ouma/reproxy
+        ```
+
+   - [🍞 Bun](https://bun.sh)
+
+     1. Add this code to the `index.ts`
+
+        ```ts
+        import "@5ouma/reproxy";
+        ```
+
+     2. Run these commands
+
+        ```sh
+        bunx jsr add @5ouma/reproxy
+        bun run index.ts
+        ```
 
 <br />
 
@@ -67,6 +86,27 @@ To do this, simply add the ref name to the sub-directory.
 
    > [🌍 Environment Variables](#-environment-variables)
 
+<br />
+
+### ☁️ Use [Cloudflare Workers](https://workers.cloudflare.com)
+
+1. Set up the `wrangler.toml`
+
+   > [🌍 Environment Variables](#-environment-variables)
+
+2. Add this code to the `index.ts`
+
+   ```ts
+   import "@5ouma/reproxy";
+   ```
+
+3. Deploy with these commands
+
+   ```sh
+   npx jsr add @5ouma/reproxy
+   npx wrangler deploy index.ts
+   ```
+
 <br /><br />
 
 ## 🔨 Development
diff --git a/src/server.test.ts b/src/server.test.ts
index 9340a1e..636f618 100644
--- a/src/server.test.ts
+++ b/src/server.test.ts
@@ -1,7 +1,7 @@
 import { assertEquals } from "@std/assert";
 import { STATUS_CODE } from "@std/http/status";
 
-import { app } from "./server.ts";
+import app from "./server.ts";
 import {
   exportRepo,
   testRef,
diff --git a/src/server.ts b/src/server.ts
index 069d7a6..ae79aa1 100644
--- a/src/server.ts
+++ b/src/server.ts
@@ -21,7 +21,8 @@ import { checkRedirect, getContent, type Repository } from "./libs/mod.ts";
  * });
  * ```
  */
-export const app: Hono = new Hono();
+const app: Hono = new Hono();
+export default app;
 app.use(logger());
 app
   .get("/:ref?", async (ctx: Context) => {
@@ -55,4 +56,4 @@ app
     return ctx.redirect("/", STATUS_CODE.SeeOther);
   });
 
-Deno.serve(app.fetch);
+if (typeof Deno !== "undefined") Deno.serve(app.fetch);