diff --git a/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_not_owner_of_object.yaml b/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_not_owner_of_object.yaml
index 2b4cc25e02..332c63e9ec 100644
--- a/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_not_owner_of_object.yaml
+++ b/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_not_owner_of_object.yaml
@@ -15,10 +15,10 @@ interactions:
       User-Agent:
       - python-requests/2.32.2
     method: GET
-    uri: http://localhost:8002/api/v2/objects/5015053e-1916-42b5-9119-ede73f5c0694
+    uri: http://localhost:8002/api/v2/objects/d36124c0-752e-48a7-a724-bf3241a2e646
   response:
     body:
-      string: '{"url":"http://objects-web:8000/api/v2/objects/5015053e-1916-42b5-9119-ede73f5c0694","uuid":"5015053e-1916-42b5-9119-ede73f5c0694","type":"http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e","record":{"index":1,"typeVersion":1,"data":{"bsn":"111222333","foo":"bar"},"geometry":null,"startAt":"2024-10-29","endAt":null,"registrationAt":"2024-10-29","correctionFor":null,"correctedBy":null}}'
+      string: '{"url":"http://objects-web:8000/api/v2/objects/d36124c0-752e-48a7-a724-bf3241a2e646","uuid":"d36124c0-752e-48a7-a724-bf3241a2e646","type":"http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e","record":{"index":1,"typeVersion":1,"data":{"bsn":"111222333","foo":"bar"},"geometry":null,"startAt":"2024-10-29","endAt":null,"registrationAt":"2024-10-29","correctionFor":null,"correctedBy":null}}'
     headers:
       Allow:
       - GET, PUT, PATCH, DELETE, HEAD, OPTIONS
@@ -33,7 +33,7 @@ interactions:
       Cross-Origin-Opener-Policy:
       - same-origin
       Date:
-      - Tue, 29 Oct 2024 11:41:43 GMT
+      - Tue, 29 Oct 2024 13:38:52 GMT
       Referrer-Policy:
       - same-origin
       Server:
diff --git a/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_owner_of_object.yaml b/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_owner_of_object.yaml
index 2b4cc25e02..332c63e9ec 100644
--- a/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_owner_of_object.yaml
+++ b/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/ObjectsAPIInitialDataOwnershipValidatorTests.test_user_is_owner_of_object.yaml
@@ -15,10 +15,10 @@ interactions:
       User-Agent:
       - python-requests/2.32.2
     method: GET
-    uri: http://localhost:8002/api/v2/objects/5015053e-1916-42b5-9119-ede73f5c0694
+    uri: http://localhost:8002/api/v2/objects/d36124c0-752e-48a7-a724-bf3241a2e646
   response:
     body:
-      string: '{"url":"http://objects-web:8000/api/v2/objects/5015053e-1916-42b5-9119-ede73f5c0694","uuid":"5015053e-1916-42b5-9119-ede73f5c0694","type":"http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e","record":{"index":1,"typeVersion":1,"data":{"bsn":"111222333","foo":"bar"},"geometry":null,"startAt":"2024-10-29","endAt":null,"registrationAt":"2024-10-29","correctionFor":null,"correctedBy":null}}'
+      string: '{"url":"http://objects-web:8000/api/v2/objects/d36124c0-752e-48a7-a724-bf3241a2e646","uuid":"d36124c0-752e-48a7-a724-bf3241a2e646","type":"http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e","record":{"index":1,"typeVersion":1,"data":{"bsn":"111222333","foo":"bar"},"geometry":null,"startAt":"2024-10-29","endAt":null,"registrationAt":"2024-10-29","correctionFor":null,"correctedBy":null}}'
     headers:
       Allow:
       - GET, PUT, PATCH, DELETE, HEAD, OPTIONS
@@ -33,7 +33,7 @@ interactions:
       Cross-Origin-Opener-Policy:
       - same-origin
       Date:
-      - Tue, 29 Oct 2024 11:41:43 GMT
+      - Tue, 29 Oct 2024 13:38:52 GMT
       Referrer-Policy:
       - same-origin
       Server:
diff --git a/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/setUpTestData.yaml b/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/setUpTestData.yaml
new file mode 100644
index 0000000000..4b65c9a456
--- /dev/null
+++ b/src/openforms/contrib/objects_api/tests/files/vcr_cassettes/ObjectsAPIInitialDataOwnershipValidatorTests/setUpTestData.yaml
@@ -0,0 +1,58 @@
+interactions:
+- request:
+    body: '{"type": "http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e",
+      "record": {"typeVersion": 1, "data": {"bsn": "111222333", "foo": "bar"}, "startAt":
+      "2024-10-29"}}'
+    headers:
+      Accept:
+      - '*/*'
+      Accept-Encoding:
+      - gzip, deflate, br
+      Authorization:
+      - Token 7657474c3d75f56ae0abd0d1bf7994b09964dca9
+      Connection:
+      - keep-alive
+      Content-Crs:
+      - EPSG:4326
+      Content-Length:
+      - '194'
+      Content-Type:
+      - application/json
+      User-Agent:
+      - python-requests/2.32.2
+    method: POST
+    uri: http://localhost:8002/api/v2/objects
+  response:
+    body:
+      string: '{"url":"http://objects-web:8000/api/v2/objects/d36124c0-752e-48a7-a724-bf3241a2e646","uuid":"d36124c0-752e-48a7-a724-bf3241a2e646","type":"http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e","record":{"index":1,"typeVersion":1,"data":{"bsn":"111222333","foo":"bar"},"geometry":null,"startAt":"2024-10-29","endAt":null,"registrationAt":"2024-10-29","correctionFor":null,"correctedBy":null}}'
+    headers:
+      Allow:
+      - GET, POST, HEAD, OPTIONS
+      Connection:
+      - keep-alive
+      Content-Crs:
+      - EPSG:4326
+      Content-Length:
+      - '422'
+      Content-Type:
+      - application/json
+      Cross-Origin-Opener-Policy:
+      - same-origin
+      Date:
+      - Tue, 29 Oct 2024 13:38:51 GMT
+      Location:
+      - http://localhost:8002/api/v2/objects/d36124c0-752e-48a7-a724-bf3241a2e646
+      Referrer-Policy:
+      - same-origin
+      Server:
+      - nginx/1.27.0
+      Vary:
+      - origin
+      X-Content-Type-Options:
+      - nosniff
+      X-Frame-Options:
+      - DENY
+    status:
+      code: 201
+      message: Created
+version: 1
diff --git a/src/openforms/contrib/objects_api/tests/test_validators.py b/src/openforms/contrib/objects_api/tests/test_validators.py
index 992cdaedc1..62aaf230d4 100644
--- a/src/openforms/contrib/objects_api/tests/test_validators.py
+++ b/src/openforms/contrib/objects_api/tests/test_validators.py
@@ -5,6 +5,7 @@
 from django.test import TestCase, override_settings, tag
 
 from requests.exceptions import RequestException
+from vcr.config import VCR
 
 from openforms.authentication.service import AuthAttribute
 from openforms.contrib.objects_api.clients import get_objects_client
@@ -34,16 +35,25 @@ def setUpTestData(cls):
         cls.objects_api_group_used = ObjectsAPIGroupConfigFactory.create(
             for_test_docker_compose=True
         )
-        # TODO fix tests failing after first run
-        with get_objects_client(cls.objects_api_group_used) as client:
-            object = client.create_object(
-                record_data=prepare_data_for_registration(
-                    data={"bsn": "111222333", "foo": "bar"},
-                    objecttype_version=1,
-                ),
-                objecttype_url="http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e",
-            )
-        cls.object_ref = object["uuid"]
+
+        # Explicitly define a cassette for Object creation, because running this in
+        # setUpTestData doesn't record cassettes by default
+        cassette_path = Path(
+            cls.VCR_TEST_FILES
+            / "vcr_cassettes"
+            / cls.__qualname__
+            / "setUpTestData.yaml"
+        )
+        with VCR().use_cassette(cassette_path):
+            with get_objects_client(cls.objects_api_group_used) as client:
+                object = client.create_object(
+                    record_data=prepare_data_for_registration(
+                        data={"bsn": "111222333", "foo": "bar"},
+                        objecttype_version=1,
+                    ),
+                    objecttype_url="http://objecttypes-web:8000/api/v2/objecttypes/8faed0fa-7864-4409-aa6d-533a37616a9e",
+                )
+            cls.object_ref = object["uuid"]
 
     @tag("gh-4398")
     def test_user_is_owner_of_object(self):