diff --git a/airflow/dag_processing/manager.py b/airflow/dag_processing/manager.py
index a4e99e06a9dd2..b5429a484e9ea 100644
--- a/airflow/dag_processing/manager.py
+++ b/airflow/dag_processing/manager.py
@@ -407,7 +407,7 @@ def run(self):
         DagBundlesManager().sync_bundles_to_db()
 
         self.log.info("Getting all DAG bundles")
-        self._dag_bundles = DagBundlesManager().get_all_dag_bundles()
+        self._dag_bundles = list(DagBundlesManager().get_all_dag_bundles())
 
         return self._run_parsing_loop()
 
diff --git a/tests/api_connexion/endpoints/test_dag_run_endpoint.py b/tests/api_connexion/endpoints/test_dag_run_endpoint.py
index 90f88ddd030a8..b6609c162390d 100644
--- a/tests/api_connexion/endpoints/test_dag_run_endpoint.py
+++ b/tests/api_connexion/endpoints/test_dag_run_endpoint.py
@@ -91,7 +91,7 @@ def _create_dag(self, dag_id):
         dag = DAG(dag_id=dag_id, schedule=None, params={"validated_number": Param(1, minimum=1, maximum=10)})
         DagBundlesManager().sync_bundles_to_db()
         self.app.dag_bag.bag_dag(dag)
-        self.app.dag_bag.sync_to_db("dags_folder", None)
+        self.app.dag_bag.sync_to_db("dags-folder", None)
         return dag_instance
 
     def _create_test_dag_run(self, state=DagRunState.RUNNING, extra_dag=False, commit=True, idx_start=1):
diff --git a/tests/api_connexion/endpoints/test_extra_link_endpoint.py b/tests/api_connexion/endpoints/test_extra_link_endpoint.py
index de58eaa243fec..e4aa7895ac662 100644
--- a/tests/api_connexion/endpoints/test_extra_link_endpoint.py
+++ b/tests/api_connexion/endpoints/test_extra_link_endpoint.py
@@ -77,7 +77,7 @@ def setup_attrs(self, configured_app, session) -> None:
         DagBundlesManager().sync_bundles_to_db()
         self.app.dag_bag = DagBag(os.devnull, include_examples=False)
         self.app.dag_bag.dags = {self.dag.dag_id: self.dag}
-        self.app.dag_bag.sync_to_db("dags_folder", None)
+        self.app.dag_bag.sync_to_db("dags-folder", None)
 
         triggered_by_kwargs = {"triggered_by": DagRunTriggeredByType.TEST} if AIRFLOW_V_3_0_PLUS else {}
         self.dag.create_dagrun(
diff --git a/tests/api_connexion/endpoints/test_mapped_task_instance_endpoint.py b/tests/api_connexion/endpoints/test_mapped_task_instance_endpoint.py
index 1141cad8788c7..7a4d802f6cc15 100644
--- a/tests/api_connexion/endpoints/test_mapped_task_instance_endpoint.py
+++ b/tests/api_connexion/endpoints/test_mapped_task_instance_endpoint.py
@@ -126,7 +126,7 @@ def create_dag_runs_with_mapped_tasks(self, dag_maker, session, dags=None):
             DagBundlesManager().sync_bundles_to_db()
             self.app.dag_bag = DagBag(os.devnull, include_examples=False)
             self.app.dag_bag.dags = {dag_id: dag_maker.dag}
-            self.app.dag_bag.sync_to_db("dags_folder", None)
+            self.app.dag_bag.sync_to_db("dags-folder", None)
             session.flush()
 
             mapped.expand_mapped_task(dr.run_id, session=session)
diff --git a/tests/api_connexion/endpoints/test_task_endpoint.py b/tests/api_connexion/endpoints/test_task_endpoint.py
index 5926b6424e8e8..7e593731d539d 100644
--- a/tests/api_connexion/endpoints/test_task_endpoint.py
+++ b/tests/api_connexion/endpoints/test_task_endpoint.py
@@ -89,7 +89,7 @@ def setup_dag(self, configured_app):
             mapped_dag.dag_id: mapped_dag,
             unscheduled_dag.dag_id: unscheduled_dag,
         }
-        dag_bag.sync_to_db("dags_folder", None)
+        dag_bag.sync_to_db("dags-folder", None)
         configured_app.dag_bag = dag_bag  # type:ignore
 
     @staticmethod
diff --git a/tests/api_connexion/endpoints/test_task_instance_endpoint.py b/tests/api_connexion/endpoints/test_task_instance_endpoint.py
index b06742da8aa5c..b5079c47aa17e 100644
--- a/tests/api_connexion/endpoints/test_task_instance_endpoint.py
+++ b/tests/api_connexion/endpoints/test_task_instance_endpoint.py
@@ -1224,7 +1224,7 @@ def test_should_respond_200(self, main_dag, task_instances, request_dag, payload
             task_instances=task_instances,
             update_extras=False,
         )
-        self.app.dag_bag.sync_to_db("dags_folder", None)
+        self.app.dag_bag.sync_to_db("dags-folder", None)
         response = self.client.post(
             f"/api/v1/dags/{request_dag}/clearTaskInstances",
             environ_overrides={"REMOTE_USER": "test"},
@@ -1246,7 +1246,7 @@ def test_clear_taskinstance_is_called_with_queued_dr_state(self, mock_clearti, s
         self.create_task_instances(session)
         dag_id = "example_python_operator"
         payload = {"reset_dag_runs": True, "dry_run": False}
-        self.app.dag_bag.sync_to_db("dags_folder", None)
+        self.app.dag_bag.sync_to_db("dags-folder", None)
         response = self.client.post(
             f"/api/v1/dags/{dag_id}/clearTaskInstances",
             environ_overrides={"REMOTE_USER": "test"},
@@ -1266,7 +1266,7 @@ def test_clear_taskinstance_is_called_with_invalid_task_ids(self, session):
         assert dagrun.state == "running"
 
         payload = {"dry_run": False, "reset_dag_runs": True, "task_ids": [""]}
-        self.app.dag_bag.sync_to_db("dags_folder", None)
+        self.app.dag_bag.sync_to_db("dags-folder", None)
         response = self.client.post(
             f"/api/v1/dags/{dag_id}/clearTaskInstances",
             environ_overrides={"REMOTE_USER": "test"},
@@ -1693,7 +1693,7 @@ def test_should_raise_400_for_naive_and_bad_datetime(self, payload, expected, se
             task_instances=task_instances,
             update_extras=False,
         )
-        self.app.dag_bag.sync_to_db("dags_folder", None)
+        self.app.dag_bag.sync_to_db("dags-folder", None)
         response = self.client.post(
             "/api/v1/dags/example_python_operator/clearTaskInstances",
             environ_overrides={"REMOTE_USER": "test"},
diff --git a/tests/api_fastapi/core_api/routes/public/test_extra_links.py b/tests/api_fastapi/core_api/routes/public/test_extra_links.py
index 0be767538eed3..89aef555bbe20 100644
--- a/tests/api_fastapi/core_api/routes/public/test_extra_links.py
+++ b/tests/api_fastapi/core_api/routes/public/test_extra_links.py
@@ -72,7 +72,7 @@ def setup(self, test_client, session=None) -> None:
         dag_bag = DagBag(os.devnull, include_examples=False)
         dag_bag.dags = {self.dag.dag_id: self.dag}
         test_client.app.state.dag_bag = dag_bag
-        dag_bag.sync_to_db("dags_folder", None)
+        dag_bag.sync_to_db("dags-folder", None)
 
         triggered_by_kwargs = {"triggered_by": DagRunTriggeredByType.TEST}
 
diff --git a/tests/api_fastapi/core_api/routes/public/test_task_instances.py b/tests/api_fastapi/core_api/routes/public/test_task_instances.py
index 9be7901b9d197..f0c3c888807ea 100644
--- a/tests/api_fastapi/core_api/routes/public/test_task_instances.py
+++ b/tests/api_fastapi/core_api/routes/public/test_task_instances.py
@@ -526,7 +526,7 @@ def create_dag_runs_with_mapped_tasks(self, dag_maker, session, dags=None):
             DagBundlesManager().sync_bundles_to_db()
             dagbag = DagBag(os.devnull, include_examples=False)
             dagbag.dags = {dag_id: dag_maker.dag}
-            dagbag.sync_to_db("dags_folder", None)
+            dagbag.sync_to_db("dags-folder", None)
             session.flush()
 
             mapped.expand_mapped_task(dr.run_id, session=session)
@@ -1859,7 +1859,7 @@ def test_should_respond_200(
             task_instances=task_instances,
             update_extras=False,
         )
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{request_dag}/clearTaskInstances",
             json=payload,
@@ -1873,7 +1873,7 @@ def test_clear_taskinstance_is_called_with_queued_dr_state(self, mock_clearti, t
         self.create_task_instances(session)
         dag_id = "example_python_operator"
         payload = {"reset_dag_runs": True, "dry_run": False}
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{dag_id}/clearTaskInstances",
             json=payload,
@@ -1893,7 +1893,7 @@ def test_clear_taskinstance_is_called_with_invalid_task_ids(self, test_client, s
         assert dagrun.state == "running"
 
         payload = {"dry_run": False, "reset_dag_runs": True, "task_ids": [""]}
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{dag_id}/clearTaskInstances",
             json=payload,
@@ -1943,7 +1943,7 @@ def test_should_respond_200_with_reset_dag_run(self, test_client, session):
             update_extras=False,
             dag_run_state=DagRunState.FAILED,
         )
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{dag_id}/clearTaskInstances",
             json=payload,
@@ -2028,7 +2028,7 @@ def test_should_respond_200_with_dag_run_id(self, test_client, session):
             update_extras=False,
             dag_run_state=State.FAILED,
         )
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{dag_id}/clearTaskInstances",
             json=payload,
@@ -2084,7 +2084,7 @@ def test_should_respond_200_with_include_past(self, test_client, session):
             update_extras=False,
             dag_run_state=State.FAILED,
         )
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{dag_id}/clearTaskInstances",
             json=payload,
@@ -2166,7 +2166,7 @@ def test_should_respond_200_with_include_future(self, test_client, session):
             update_extras=False,
             dag_run_state=State.FAILED,
         )
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             f"/public/dags/{dag_id}/clearTaskInstances",
             json=payload,
@@ -2314,7 +2314,7 @@ def test_should_raise_400_for_naive_and_bad_datetime(self, test_client, session,
             task_instances=task_instances,
             update_extras=False,
         )
-        self.dagbag.sync_to_db("dags_folder", None)
+        self.dagbag.sync_to_db("dags-folder", None)
         response = test_client.post(
             "/public/dags/example_python_operator/clearTaskInstances",
             json=payload,
diff --git a/tests/cli/commands/remote_commands/test_task_command.py b/tests/cli/commands/remote_commands/test_task_command.py
index 05e90dddcd3a1..9a4c606caa469 100644
--- a/tests/cli/commands/remote_commands/test_task_command.py
+++ b/tests/cli/commands/remote_commands/test_task_command.py
@@ -164,7 +164,7 @@ def test_cli_test_different_path(self, session, tmp_path):
         with conf_vars({("core", "dags_folder"): orig_dags_folder.as_posix()}):
             dagbag = DagBag(include_examples=False)
             dag = dagbag.get_dag("test_dags_folder")
-            dagbag.sync_to_db("dags_folder", None, session=session)
+            dagbag.sync_to_db("dags-folder", None, session=session)
 
         logical_date = pendulum.now("UTC")
         data_interval = dag.timetable.infer_manual_data_interval(run_after=logical_date)
diff --git a/tests/conftest.py b/tests/conftest.py
index 7194e8f307eae..8806dc1e8c1ad 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -104,13 +104,14 @@ def configure_testing_dag_bundle():
 
     @contextmanager
     def _config_bundle(path_to_parse: Path | str):
-        bundle_config = {
-            "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
-            "kwargs": {"local_folder": str(path_to_parse), "refresh_interval": 30},
-        }
-        with conf_vars(
-            {("dag_bundles", "testing"): json.dumps(bundle_config), ("dag_bundles", "dags_folder"): ""}
-        ):
+        bundle_config = [
+            {
+                "name": "testing",
+                "classpath": "airflow.dag_processing.bundles.local.LocalDagBundle",
+                "kwargs": {"local_folder": str(path_to_parse), "refresh_interval": 30},
+            }
+        ]
+        with conf_vars({("dag_bundles", "backends"): json.dumps(bundle_config)}):
             yield
 
     return _config_bundle
diff --git a/tests_common/test_utils/db.py b/tests_common/test_utils/db.py
index d8abb8cda1a38..58ad46372d711 100644
--- a/tests_common/test_utils/db.py
+++ b/tests_common/test_utils/db.py
@@ -72,7 +72,7 @@ def _bootstrap_dagbag():
         dagbag = DagBag()
         # Save DAGs in the ORM
         if AIRFLOW_V_3_0_PLUS:
-            dagbag.sync_to_db(bundle_name="dags_folder", bundle_version=None, session=session)
+            dagbag.sync_to_db(bundle_name="dags-folder", bundle_version=None, session=session)
         else:
             dagbag.sync_to_db(session=session)
 
@@ -120,7 +120,7 @@ def parse_and_sync_to_db(folder: Path | str, include_examples: bool = False):
 
         dagbag = DagBag(dag_folder=folder, include_examples=include_examples)
         if AIRFLOW_V_3_0_PLUS:
-            dagbag.sync_to_db("dags_folder", None, session)
+            dagbag.sync_to_db("dags-folder", None, session)
         else:
             dagbag.sync_to_db(session=session)  # type: ignore[call-arg]
         session.commit()