diff --git a/packages/dev-server/config/dev.php b/packages/dev-server/config/dev.php
index b39eb52..3af2b69 100644
--- a/packages/dev-server/config/dev.php
+++ b/packages/dev-server/config/dev.php
@@ -4,6 +4,7 @@
 
 return [
     'port' => 8000,
+    'host' => 'localhost',
     'detach' => true,
     'docker' => true,
     'frontend' => true,
diff --git a/packages/dev-server/src/Command/DevUpCommand.php b/packages/dev-server/src/Command/DevUpCommand.php
index 56945e1..9e919f6 100644
--- a/packages/dev-server/src/Command/DevUpCommand.php
+++ b/packages/dev-server/src/Command/DevUpCommand.php
@@ -42,6 +42,7 @@ public function execute(
     ): int {
         $port = (int) ($input->getOption('port') ?? $input->getOption('p') ?? $this->config->getInt('dev.port'));
         $foreground = $input->hasOption('foreground') || $input->hasOption('f');
+        $host = $input->getOption('host') ?? $input->getOption('h') ?? $this->config->getString('dev.host');
         $detach = !$foreground && ($input->hasOption('detach') || $input->hasOption('d') || $this->config->getBool(
             'dev.detach',
         ));
@@ -156,8 +157,8 @@ public function execute(
         }
 
         // PHP server (always) — multiple workers needed for SSE
-        $phpCommand = "env PHP_CLI_SERVER_WORKERS=4 php -S localhost:$port -t public/";
-        $output->writeLine("  Starting PHP server: php -S localhost:$port");
+        $phpCommand = "env PHP_CLI_SERVER_WORKERS=4 php -S {$host}:{$port} -t public/";
+        $output->writeLine("  Starting PHP server: php -S {$host}:{$port}");
         $pid = $startProcess('php', $phpCommand);
 
         // In foreground mode, verify PHP server is alive — if it died, port is likely in use.
diff --git a/packages/dev-server/tests/Command/DevUpCommandTest.php b/packages/dev-server/tests/Command/DevUpCommandTest.php
index 10f52da..ea41b32 100644
--- a/packages/dev-server/tests/Command/DevUpCommandTest.php
+++ b/packages/dev-server/tests/Command/DevUpCommandTest.php
@@ -59,6 +59,16 @@ public function runForeground(): void
     }
 }
 
+const CONFIG_DEFAULTS = [
+    'dev.port' => 8000,
+    'dev.host' => 'localhost',
+    'dev.docker' => false,
+    'dev.frontend' => false,
+    'dev.pubsub' => false,
+    'dev.detach' => true,
+    'dev.processes' => [],
+];
+
 /**
  * Helper to create a DevUpCommand with standard test dependencies.
  *
@@ -85,15 +95,7 @@ function createDevUpCommand(
         file_put_contents($dir . '/public/index.php', '<?php');
     }
 
-    $configDefaults = [
-        'dev.port' => 8000,
-        'dev.docker' => false,
-        'dev.frontend' => false,
-        'dev.pubsub' => false,
-        'dev.detach' => true,
-        'dev.processes' => [],
-    ];
-    $fakeConfig = new FakeConfigRepository(array_merge($configDefaults, $config));
+    $fakeConfig = new FakeConfigRepository(array_merge(CONFIG_DEFAULTS, $config));
 
     $dockerDetector = new DockerDetector($dir);
     $frontendDetector = new FrontendDetector($dir);
@@ -150,6 +152,16 @@ function readStream(mixed $stream): string
     expect($pm->started['php'])->toContain('localhost:7500');
 });
 
+it('reads host from config', function (): void {
+    ['command' => $command, 'processManager' => $pm] = createDevUpCommand(['dev.host' => '127.0.0.1']);
+    ['output' => $output] = createMemoryOutput();
+
+    $input = new Input(['marko', 'dev:up']);
+    $command->execute($input, $output);
+
+    expect($pm->started['php'])->toContain('127.0.0.1:8000');
+});
+
 it('reads docker setting from config', function (): void {
     ['command' => $command, 'processManager' => $pm] = createDevUpCommand([
         'dev.docker' => 'custom-docker-up',
@@ -417,6 +429,17 @@ function readStream(mixed $stream): string
     expect($pm->started['php'])->toContain('localhost:9000');
 });
 
+it('overrides config port with -h short flag', function (): void {
+    ['command' => $command, 'processManager' => $pm] = createDevUpCommand(['dev.host' => 'localhost']);
+    ['output' => $output] = createMemoryOutput();
+
+    $input = new Input(['marko', 'dev:up', '-h=0.0.0.0']);
+    $command->execute($input, $output);
+
+    expect($pm->started['php'])->toContain('0.0.0.0:8000');
+});
+
+
 it('overrides config port with -p space syntax', function (): void {
     ['command' => $command, 'processManager' => $pm] = createDevUpCommand(['dev.port' => 8000]);
     ['output' => $output] = createMemoryOutput();
@@ -520,7 +543,7 @@ function readStream(mixed $stream): string
     $command->execute($input, $output);
 
     $entries = $pidFile->read();
-    $names = array_map(fn ($e) => $e->name, $entries);
+    $names = array_map(fn($e) => $e->name, $entries);
 
     expect($names)->toContain('tailwind')
         ->and($names)->toContain('php');
@@ -544,7 +567,7 @@ function readStream(mixed $stream): string
 });
 
 it('starts pubsub:listen as managed process in DevUpCommand when detected', function (): void {
-    $pubsubDetector = new class () extends PubSubDetector
+    $pubsubDetector = new class() extends PubSubDetector
     {
         protected function isPubSubInstalled(): bool
         {
@@ -570,14 +593,7 @@ protected function isPubSubInstalled(): bool
     mkdir($dir, 0755, true);
     // Deliberately no public/index.php created
 
-    $fakeConfig = new FakeConfigRepository([
-        'dev.port' => 8000,
-        'dev.docker' => false,
-        'dev.frontend' => false,
-        'dev.pubsub' => false,
-        'dev.detach' => false,
-        'dev.processes' => [],
-    ]);
+    $fakeConfig = new FakeConfigRepository(CONFIG_DEFAULTS);
     $command = new DevUpCommand(
         config: $fakeConfig,
         dockerDetector: new DockerDetector($dir),
@@ -597,14 +613,7 @@ protected function isPubSubInstalled(): bool
     $dir = sys_get_temp_dir() . '/marko-no-index-msg-' . uniqid();
     mkdir($dir, 0755, true);
 
-    $fakeConfig = new FakeConfigRepository([
-        'dev.port' => 8000,
-        'dev.docker' => false,
-        'dev.frontend' => false,
-        'dev.pubsub' => false,
-        'dev.detach' => false,
-        'dev.processes' => [],
-    ]);
+    $fakeConfig = new FakeConfigRepository(CONFIG_DEFAULTS);
     $command = new DevUpCommand(
         config: $fakeConfig,
         dockerDetector: new DockerDetector($dir),
@@ -632,14 +641,11 @@ protected function isPubSubInstalled(): bool
     $dir = sys_get_temp_dir() . '/marko-no-index-proc-' . uniqid();
     mkdir($dir, 0755, true);
 
-    $fakeConfig = new FakeConfigRepository([
-        'dev.port' => 8000,
+    $fakeConfig = new FakeConfigRepository(array_merge(CONFIG_DEFAULTS, [
         'dev.docker' => 'docker compose up',
         'dev.frontend' => 'yarn dev',
-        'dev.pubsub' => false,
         'dev.detach' => false,
-        'dev.processes' => [],
-    ]);
+    ]));
     $pm = new FakeProcessManager();
     $command = new DevUpCommand(
         config: $fakeConfig,
@@ -668,14 +674,7 @@ protected function isPubSubInstalled(): bool
     mkdir($dir . '/public', 0755, true);
     file_put_contents($dir . '/public/index.php', '<?php');
 
-    $fakeConfig = new FakeConfigRepository([
-        'dev.port' => 8000,
-        'dev.docker' => false,
-        'dev.frontend' => false,
-        'dev.pubsub' => false,
-        'dev.detach' => false,
-        'dev.processes' => [],
-    ]);
+    $fakeConfig = new FakeConfigRepository(CONFIG_DEFAULTS);
     $pm = new FakeProcessManager();
     $command = new DevUpCommand(
         config: $fakeConfig,
@@ -773,7 +772,7 @@ protected function isPubSubInstalled(): bool
 });
 
 it('skips pubsub process when pubsub config is false', function (): void {
-    $pubsubDetector = new class () extends PubSubDetector
+    $pubsubDetector = new class() extends PubSubDetector
     {
         protected function isPubSubInstalled(): bool
         {