diff --git a/package.json b/package.json
index 77d2866776..bba3d9e104 100644
--- a/package.json
+++ b/package.json
@@ -64,7 +64,7 @@
     "jiti": "1.20.0",
     "markdownlint-cli": "^0.33.0",
     "nitropack": "2.6.3",
-    "nuxi": "3.7.3",
+    "nuxi": "3.8.3",
     "nuxt": "workspace:*",
     "nuxt-vitest": "0.10.4",
     "ofetch": "1.3.3",
diff --git a/packages/nuxt/package.json b/packages/nuxt/package.json
index cbf680c88e..64d2336b7c 100644
--- a/packages/nuxt/package.json
+++ b/packages/nuxt/package.json
@@ -82,7 +82,7 @@
     "magic-string": "^0.30.3",
     "mlly": "^1.4.2",
     "nitropack": "^2.6.3",
-    "nuxi": "^3.7.3",
+    "nuxi": "^3.8.3",
     "nypm": "^0.3.3",
     "ofetch": "^1.3.3",
     "ohash": "^1.1.3",
diff --git a/packages/test-utils/src/server.ts b/packages/test-utils/src/server.ts
index aed891f633..1305f7b5ea 100644
--- a/packages/test-utils/src/server.ts
+++ b/packages/test-utils/src/server.ts
@@ -13,8 +13,9 @@ const kit: typeof _kit = _kit.default || _kit
 export async function startServer () {
   const ctx = useTestContext()
   await stopServer()
-  const port = ctx.options.port || await getRandomPort()
-  ctx.url = 'http://127.0.0.1:' + port
+  const host = '127.0.0.1'
+  const port = ctx.options.port || await getRandomPort(host)
+  ctx.url = `http://${host}:${port}`
   if (ctx.options.dev) {
     const nuxiCLI = await kit.resolvePath('nuxi/cli')
     ctx.serverProcess = execa(nuxiCLI, ['_dev'], {
@@ -22,13 +23,13 @@ export async function startServer () {
       stdio: 'inherit',
       env: {
         ...process.env,
-        _PORT: String(port),
+        _PORT: String(port), // Used by internal _dev command
         PORT: String(port),
-        NITRO_PORT: String(port),
+        HOST: host,
         NODE_ENV: 'development'
       }
     })
-    await waitForPort(port, { retries: 32 })
+    await waitForPort(port, { retries: 32, host }).catch(() => {})
     let lastError
     for (let i = 0; i < 150; i++) {
       await new Promise(resolve => setTimeout(resolve, 100))
@@ -51,11 +52,11 @@ export async function startServer () {
       env: {
         ...process.env,
         PORT: String(port),
-        NITRO_PORT: String(port),
+        HOST: host,
         NODE_ENV: 'test'
       }
     })
-    await waitForPort(port, { retries: 8 })
+    await waitForPort(port, { retries: 20, host })
   }
 }
 
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 5ace460f86..7d26ac2543 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -95,8 +95,8 @@ importers:
         specifier: 2.6.3
         version: 2.6.3
       nuxi:
-        specifier: 3.7.3
-        version: 3.7.3
+        specifier: 3.8.3
+        version: 3.8.3
       nuxt:
         specifier: workspace:*
         version: link:packages/nuxt
@@ -336,8 +336,8 @@ importers:
         specifier: ^2.6.3
         version: 2.6.3
       nuxi:
-        specifier: ^3.7.3
-        version: 3.7.3
+        specifier: ^3.8.3
+        version: 3.8.3
       nypm:
         specifier: ^0.3.3
         version: 0.3.3
@@ -2526,6 +2526,7 @@ packages:
     dependencies:
       is-glob: 4.0.3
       micromatch: 4.0.5
+      napi-wasm: 1.1.0
     bundledDependencies:
       - napi-wasm
 
@@ -7927,6 +7928,9 @@ packages:
     engines: {node: ^14 || ^16 || >=18}
     hasBin: true
 
+  /napi-wasm@1.1.0:
+    resolution: {integrity: sha512-lHwIAJbmLSjF9VDRm9GoVOy9AGp3aIvkjv+Kvz9h16QR3uSVYH78PNQUnT2U4X53mhlnV2M7wrhibQ3GHicDmg==}
+
   /natural-compare@1.4.0:
     resolution: {integrity: sha512-OWND8ei3VtNC9h7V60qff3SVobHr996CTwgxubgyQYEpg290h9J0buyECNNJexkFm5sOajh5G116RYA1c8ZMSw==}
 
@@ -8140,8 +8144,8 @@ packages:
     dependencies:
       boolbase: 1.0.0
 
-  /nuxi@3.7.3:
-    resolution: {integrity: sha512-Cg+ygRmhonE6PwAtDeKvKU/0VRqEyzmSSoJYfr0MzwIxQYrBSnLvw0z3UgJl/8MgFKjiZ5Y4wBUEiRsUw8O6uw==}
+  /nuxi@3.8.3:
+    resolution: {integrity: sha512-LS1KlxQhQDt+WREENAG44zfO91uiPYDcorQ7xlcaV0ejV65v7Eub94FTmJ6JNXL2boHhc+raODtJBClW2uYyJw==}
     engines: {node: ^14.18.0 || >=16.10.0}
     hasBin: true
     optionalDependencies: