diff --git a/package.json b/package.json
index dd14821bd..b591e5b44 100644
--- a/package.json
+++ b/package.json
@@ -127,6 +127,7 @@
     "next": "14.2.0-canary.22",
     "node-mocks-http": "^1.14.1",
     "nodemon": "3.0.3",
+    "open": "^10.1.0",
     "pino": "8.15.0",
     "pino-pretty": "10.2.0",
     "playwright": "^1.42.1",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index cac2c9b88..8d9e00511 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -205,6 +205,9 @@ importers:
       nodemon:
         specifier: 3.0.3
         version: 3.0.3
+      open:
+        specifier: ^10.1.0
+        version: 10.1.0
       pino:
         specifier: 8.15.0
         version: 8.15.0
@@ -13414,6 +13417,16 @@ packages:
       is-wsl: 3.1.0
     dev: true
 
+  /open@10.1.0:
+    resolution: {integrity: sha512-mnkeQ1qP5Ue2wd+aivTD3NHd/lZ96Lu0jgf0pwktLPtx6cTZiH7tyeGRRHs0zX0rbrahXPnXlUnbeXyaBBuIaw==}
+    engines: {node: '>=18'}
+    dependencies:
+      default-browser: 5.2.1
+      define-lazy-prop: 3.0.0
+      is-inside-container: 1.0.0
+      is-wsl: 3.1.0
+    dev: true
+
   /opener@1.5.2:
     resolution: {integrity: sha512-ur5UIdyw5Y7yEj9wLzhqXiy6GZ3Mwx0yGI+5sMn2r0N0v3cKJvUmFH5yPP+WXh9e0xfyzyJX95D8l088DNFj7A==}
     hasBin: true
diff --git a/test/dev.js b/test/dev.js
index 808b2c5a3..319bfc42e 100644
--- a/test/dev.js
+++ b/test/dev.js
@@ -2,6 +2,7 @@ import minimist from 'minimist'
 import { nextDev } from 'next/dist/cli/next-dev.js'
 import { dirname, resolve } from 'path'
 import { fileURLToPath } from 'url'
+import open, { openApp, apps } from 'open'
 
 import { createTestHooks } from './testHooks.js'
 
@@ -26,6 +27,10 @@ await beforeTest()
 
 const rootDir = resolve(_dirname, '../')
 
+// Open the admin if the -o flag is passed
+if (args.o) {
+  await open('http://localhost:3000/admin')
+}
 // @ts-expect-error
 await nextDev({ port: process.env.PORT || 3000, dirname: rootDir }, 'default', rootDir)