diff --git a/dash/migrations/0004_instanceconfiguration_rent.py b/dash/migrations/0004_instanceconfiguration_rent.py
index 19f2056..ae5ca8f 100644
--- a/dash/migrations/0004_instanceconfiguration_rent.py
+++ b/dash/migrations/0004_instanceconfiguration_rent.py
@@ -6,14 +6,14 @@ from django.db import migrations, models
 class Migration(migrations.Migration):
 
     dependencies = [
-        ('dash', '0003_alter_instance_name'),
+        ("dash", "0003_alter_instance_name"),
     ]
 
     operations = [
         migrations.AddField(
-            model_name='instanceconfiguration',
-            name='rent',
-            field=models.FloatField(verbose_name='Monthly rent of instance in Euros'),
+            model_name="instanceconfiguration",
+            name="rent",
+            field=models.FloatField(verbose_name="Monthly rent of instance in Euros"),
             preserve_default=False,
         ),
     ]
diff --git a/dash/tests.py b/dash/tests.py
index b9d36ee..e2edcd8 100644
--- a/dash/tests.py
+++ b/dash/tests.py
@@ -36,10 +36,14 @@ def register_util(t: TestCase, username: str):
 
 def create_configurations(t: TestCase):
     t.instance_config = [
-        InstanceConfiguration(name="Personal", ram=0.5, cpu=1, storage=25),
-        InstanceConfiguration(name="Enthusiast", ram=2, cpu=2, storage=50),
-        InstanceConfiguration(name="Small Business", ram=8, cpu=4, storage=64),
-        InstanceConfiguration(name="Enterprise", ram=64, cpu=24, storage=1024),
+        InstanceConfiguration(name="Personal", rent=5.0, ram=0.5, cpu=1, storage=25),
+        InstanceConfiguration(name="Enthusiast", rent=10.0, ram=2, cpu=2, storage=50),
+        InstanceConfiguration(
+            name="Small Business", rent=20.0, ram=8, cpu=4, storage=64
+        ),
+        InstanceConfiguration(
+            name="Enterprise", rent=100.0, ram=64, cpu=24, storage=1024
+        ),
     ]
 
     for instance in t.instance_config:
@@ -110,16 +114,16 @@ class InstancesConfig(TestCase):
         Test configuration uniqueness
         """
         config1 = InstanceConfiguration(
-            name="test config 1", ram=0.5, cpu=1, storage=0.5
+            name="test config 1", rent=5.0, ram=0.5, cpu=1, storage=0.5
         )
         config1.save()
         config2 = InstanceConfiguration(
-            name="test config 2", ram=0.5, cpu=2, storage=0.5
+            name="test config 2", rent=5.0, ram=0.5, cpu=2, storage=0.5
         )
         config2.save()
         with self.assertRaises(IntegrityError):
             config3 = InstanceConfiguration(
-                name="test config 3", ram=0.5, cpu=1, storage=0.5
+                name="test config 3", rent=5.0, ram=0.5, cpu=1, storage=0.5
             )
             config3.save()