diff --git a/app/Http/Controllers/Api/ServicesController.php b/app/Http/Controllers/Api/ServicesController.php
index a2a97a3446..601c9b582b 100644
--- a/app/Http/Controllers/Api/ServicesController.php
+++ b/app/Http/Controllers/Api/ServicesController.php
@@ -210,6 +210,7 @@ class ServicesController extends Controller
 
             $application->fqdn = $containerUrls;
             $application->save();
+            updateCompose($application);
         });
 
         if (! empty($errors)) {
diff --git a/tests/Feature/ServiceUrlsApiPersistenceTest.php b/tests/Feature/ServiceUrlsApiPersistenceTest.php
new file mode 100644
index 0000000000..270a79d19e
--- /dev/null
+++ b/tests/Feature/ServiceUrlsApiPersistenceTest.php
@@ -0,0 +1,78 @@
+<?php
+
+use App\Models\Environment;
+use App\Models\InstanceSettings;
+use App\Models\Project;
+use App\Models\Server;
+use App\Models\Service;
+use App\Models\StandaloneDocker;
+use App\Models\Team;
+use App\Models\User;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Illuminate\Support\Facades\Queue;
+use Illuminate\Support\Str;
+
+uses(RefreshDatabase::class);
+
+beforeEach(function () {
+    Queue::fake();
+    config()->set('app.maintenance.store', 'array');
+    InstanceSettings::forceCreate(['id' => 0, 'is_api_enabled' => true]);
+
+    $this->team = Team::factory()->create();
+    $this->user = User::factory()->create();
+    $this->team->members()->attach($this->user->id, ['role' => 'owner']);
+
+    $plainTextToken = Str::random(40);
+    $token = $this->user->tokens()->create([
+        'name' => 'test-token',
+        'token' => hash('sha256', $plainTextToken),
+        'abilities' => ['*'],
+        'team_id' => $this->team->id,
+    ]);
+    $this->bearerToken = $token->getKey().'|'.$plainTextToken;
+
+    $server = Server::factory()->create(['team_id' => $this->team->id]);
+    $destination = StandaloneDocker::where('server_id', $server->id)->first();
+    $project = Project::factory()->create(['team_id' => $this->team->id]);
+    $environment = Environment::factory()->create(['project_id' => $project->id]);
+
+    $this->service = Service::factory()->create([
+        'environment_id' => $environment->id,
+        'server_id' => $server->id,
+        'destination_id' => $destination->id,
+        'destination_type' => $destination->getMorphClass(),
+        'docker_compose_raw' => "services:\n  frontend:\n    image: nginx:alpine\n    environment:\n      - SERVICE_FQDN_FRONTEND_80\n",
+    ]);
+    $this->service->parse(isNew: true);
+});
+
+function serviceMagicEnvValue(Service $service, string $key): ?string
+{
+    return $service->environment_variables()->where('key', $key)->value('value');
+}
+
+it('keeps a domain set through the services API urls field after the compose is parsed again', function () {
+    $this->withHeaders(['Authorization' => 'Bearer '.$this->bearerToken])
+        ->patchJson("/api/v1/services/{$this->service->uuid}", [
+            'urls' => [['name' => 'frontend', 'url' => 'https://example.com']],
+        ])
+        ->assertOk()
+        ->assertJsonPath('domains.0', 'https://example.com');
+
+    $assertDomain = function (): void {
+        $service = $this->service->fresh();
+        expect($service->applications()->where('name', 'frontend')->value('fqdn'))->toBe('https://example.com')
+            ->and(serviceMagicEnvValue($service, 'SERVICE_URL_FRONTEND'))->toBe('https://example.com')
+            ->and(serviceMagicEnvValue($service, 'SERVICE_URL_FRONTEND_80'))->toBe('https://example.com:80')
+            ->and(serviceMagicEnvValue($service, 'SERVICE_FQDN_FRONTEND'))->toBe('example.com')
+            ->and(serviceMagicEnvValue($service, 'SERVICE_FQDN_FRONTEND_80'))->toBe('example.com:80');
+    };
+
+    $assertDomain();
+
+    // StartService parses the compose again before every deploy.
+    $this->service->fresh()->parse();
+
+    $assertDomain();
+});