diff --git a/packages/cli/src/util/extension/proxy.ts b/packages/cli/src/util/extension/proxy.ts
index dc9c6fcec7d..fe71fc2f29c 100644
--- a/packages/cli/src/util/extension/proxy.ts
+++ b/packages/cli/src/util/extension/proxy.ts
@@ -8,10 +8,7 @@ import {
 import type { Server } from 'http';
 import type Client from '../client';
 
-const toHeaders = buildToHeaders({
-  // @ts-expect-error - `node-fetch` Headers is missing `getAll()`
-  Headers,
-});
+const toHeaders = buildToHeaders({ Headers });
 
 export function createProxy(client: Client): Server {
   return createServer(async (req, res) => {
diff --git a/packages/node/test/unit/dev.test.ts b/packages/node/test/unit/dev.test.ts
index 2759b82670d..0fd1e4fe72d 100644
--- a/packages/node/test/unit/dev.test.ts
+++ b/packages/node/test/unit/dev.test.ts
@@ -82,9 +82,8 @@ test('runs an edge function that uses `buffer`', async () => {
       throw new Error('Exited. error: ' + JSON.stringify(result.value));
     }
 
-    const response = await fetch(
-      `http://localhost:${result.value.port}/api/edge-buffer`
-    );
+    const { address, port } = result.value;
+    const response = await fetch(`http://${address}:${port}/api/edge-buffer`);
     expect({
       status: response.status,
       json: await response.json(),
@@ -109,9 +108,8 @@ test('runs a mjs endpoint', async () => {
       throw new Error('Exited. error: ' + JSON.stringify(result.value));
     }
 
-    const response = await fetch(
-      `http://localhost:${result.value.port}/api/hello`
-    );
+    const { address, port } = result.value;
+    const response = await fetch(`http://${address}:${port}/api/hello`);
     expect({
       status: response.status,
       headers: Object.fromEntries(response.headers),
@@ -142,9 +140,8 @@ test('runs a esm typescript endpoint', async () => {
       throw new Error('Exited. error: ' + JSON.stringify(result.value));
     }
 
-    const response = await fetch(
-      `http://localhost:${result.value.port}/api/hello`
-    );
+    const { address, port } = result.value;
+    const response = await fetch(`http://${address}:${port}/api/hello`);
     expect({
       status: response.status,
       headers: Object.fromEntries(response.headers),
@@ -175,9 +172,8 @@ test('allow setting multiple cookies with same name', async () => {
       throw new Error(`Exited. error: ${JSON.stringify(result.value)}`);
     }
 
-    const response = await fetch(
-      `http://localhost:${result.value.port}/api/hello`
-    );
+    const { address, port } = result.value;
+    const response = await fetch(`http://${address}:${port}/api/hello`);
     expect({
       status: response.status,
       text: await response.text(),