diff --git a/authentik/outposts/tests/test_api.py b/authentik/outposts/tests/test_api.py
index 483a4e50b..dc7cb57bb 100644
--- a/authentik/outposts/tests/test_api.py
+++ b/authentik/outposts/tests/test_api.py
@@ -63,7 +63,7 @@ class TestOutpostServiceConnectionsAPI(APITestCase):
         provider = ProxyProvider.objects.create(
             name="test", authorization_flow=Flow.objects.first()
         )
-        invalid = OutpostSerializer(data={"name": "foo", "providers": [provider.pk], "config": {}})
+        invalid = OutpostSerializer(data={"name": "foo", "providers": [provider.pk], "config": ""})
         self.assertFalse(invalid.is_valid())
         self.assertIn("config", invalid.errors)
         valid = OutpostSerializer(