diff --git a/authentik/stages/invitation/migrations/0005_auto_20210901_1211.py b/authentik/stages/invitation/migrations/0005_auto_20210901_1211.py
new file mode 100644
index 000000000..e8ddca3db
--- /dev/null
+++ b/authentik/stages/invitation/migrations/0005_auto_20210901_1211.py
@@ -0,0 +1,25 @@
+# Generated by Django 3.2.6 on 2021-09-01 12:11
+
+from django.db import migrations, models
+
+import authentik.core.models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("authentik_stages_invitation", "0004_invitation_single_use"),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name="invitation",
+            name="expiring",
+            field=models.BooleanField(default=True),
+        ),
+        migrations.AlterField(
+            model_name="invitation",
+            name="expires",
+            field=models.DateTimeField(default=authentik.core.models.default_token_duration),
+        ),
+    ]
diff --git a/authentik/stages/invitation/models.py b/authentik/stages/invitation/models.py
index 84c08d8ff..8568fd816 100644
--- a/authentik/stages/invitation/models.py
+++ b/authentik/stages/invitation/models.py
@@ -7,7 +7,7 @@ from django.utils.translation import gettext_lazy as _
 from django.views import View
 from rest_framework.serializers import BaseSerializer
 
-from authentik.core.models import User
+from authentik.core.models import ExpiringModel, User
 from authentik.flows.models import Stage
 
 
@@ -48,7 +48,7 @@ class InvitationStage(Stage):
         verbose_name_plural = _("Invitation Stages")
 
 
-class Invitation(models.Model):
+class Invitation(ExpiringModel):
     """Single-use invitation link"""
 
     invite_uuid = models.UUIDField(primary_key=True, editable=False, default=uuid4)
@@ -59,7 +59,6 @@ class Invitation(models.Model):
     )
 
     created_by = models.ForeignKey(User, on_delete=models.CASCADE)
-    expires = models.DateTimeField(default=None, blank=True, null=True)
     fixed_data = models.JSONField(
         default=dict,
         blank=True,
diff --git a/schema.yml b/schema.yml
index a8af80162..d640958f0 100644
--- a/schema.yml
+++ b/schema.yml
@@ -22300,7 +22300,6 @@ components:
         expires:
           type: string
           format: date-time
-          nullable: true
         fixed_data:
           type: object
           additionalProperties: {}
@@ -22321,7 +22320,6 @@ components:
         expires:
           type: string
           format: date-time
-          nullable: true
         fixed_data:
           type: object
           additionalProperties: {}
@@ -26978,7 +26976,6 @@ components:
         expires:
           type: string
           format: date-time
-          nullable: true
         fixed_data:
           type: object
           additionalProperties: {}