diff --git a/database/factories/Payment/SubscriptionFactory.php b/database/factories/Payment/SubscriptionFactory.php
index aacd7c72..05185da4 100644
--- a/database/factories/Payment/SubscriptionFactory.php
+++ b/database/factories/Payment/SubscriptionFactory.php
@@ -23,4 +23,9 @@ class SubscriptionFactory extends Factory
     {
         return $this->state(['name' => $name]);
     }
+
+    public function amount(int $amount): self
+    {
+        return $this->state(['amount' => $amount]);
+    }
 }
diff --git a/tests/Feature/Subscription/UpdateTest.php b/tests/Feature/Subscription/UpdateTest.php
new file mode 100644
index 00000000..c593602a
--- /dev/null
+++ b/tests/Feature/Subscription/UpdateTest.php
@@ -0,0 +1,52 @@
+<?php
+
+namespace Tests\Feature\Subscription;
+
+use App\Fee;
+use App\Payment\Subscription;
+use Illuminate\Foundation\Testing\DatabaseTransactions;
+use Tests\RequestFactories\SubscriptionRequestFactory;
+use Tests\TestCase;
+
+class UpdateTest extends TestCase
+{
+    use DatabaseTransactions;
+
+    public function testItUpdatesASubscription(): void
+    {
+        $this->withoutExceptionHandling()->login()->loginNami();
+        $subscription = Subscription::factory()->amount(670)->name('hi')->for(Fee::factory())->create();
+        $fee = Fee::factory()->create();
+
+        $response = $this->from("/subscription/{$subscription->id}")->patch(
+            "/subscription/{$subscription->id}",
+            SubscriptionRequestFactory::new()->amount(2500)->fee($fee)->name('lorem')->create()
+        );
+
+        $response->assertRedirect('/subscription');
+        $this->assertDatabaseHas('subscriptions', [
+            'id' => $subscription->id,
+            'amount' => 2500,
+            'fee_id' => $fee->id,
+            'name' => 'Lorem',
+        ]);
+    }
+
+    public function testItValidatesRequest(): void
+    {
+        $this->login()->loginNami();
+        $subscription = Subscription::factory()->amount(670)->name('hi')->for(Fee::factory())->create();
+        $fee = Fee::factory()->create();
+
+        $response = $this->from("/subscription/{$subscription->id}")->patch(
+            "/subscription/{$subscription->id}",
+            SubscriptionRequestFactory::new()->invalid()->create()
+        );
+
+        $this->assertErrors([
+            'amount' => 'Interner Beitrag ist erforderlich.',
+            'fee_id' => 'Nami-Beitrag ist nicht vorhanden.',
+            'name' => 'Name ist erforderlich.',
+        ], $response);
+    }
+}