diff --git a/tests/sensors/test_external_task_sensor.py b/tests/sensors/test_external_task_sensor.py
index 91b224a0de44..66d9766d8187 100644
--- a/tests/sensors/test_external_task_sensor.py
+++ b/tests/sensors/test_external_task_sensor.py
@@ -808,6 +808,7 @@ def test_catch_invalid_allowed_states(self):
                 dag=self.dag,
             )
 
+    @pytest.mark.skip_if_database_isolation_mode  # Test is broken in db isolation mode
     def test_external_task_sensor_waits_for_task_check_existence(self):
         op = ExternalTaskSensor(
             task_id="test_external_task_sensor_check",
@@ -820,6 +821,7 @@ def test_external_task_sensor_waits_for_task_check_existence(self):
         with pytest.raises(AirflowException):
             op.run(start_date=DEFAULT_DATE, end_date=DEFAULT_DATE, ignore_ti_state=True)
 
+    @pytest.mark.skip_if_database_isolation_mode  # Test is broken in db isolation mode
     def test_external_task_sensor_waits_for_dag_check_existence(self):
         op = ExternalTaskSensor(
             task_id="test_external_task_sensor_check",