diff --git a/simpeg_drivers/potential_fields/magnetic_vector/options.py b/simpeg_drivers/potential_fields/magnetic_vector/options.py
index fa5bf436..562b7262 100644
--- a/simpeg_drivers/potential_fields/magnetic_vector/options.py
+++ b/simpeg_drivers/potential_fields/magnetic_vector/options.py
@@ -13,9 +13,9 @@
 
 from pathlib import Path
 from typing import ClassVar
-from warnings import warn
 
 from geoh5py.data import FloatData
+from geoh5py.ui_json.annotations import Deprecated
 from pydantic import model_validator
 
 from simpeg_drivers import assets_path
@@ -129,19 +129,10 @@ class MVIInversionOptions(BaseInversionOptions):
     inducing_field_strength: float | FloatData = 50000.0
     inducing_field_inclination: float | FloatData = 90.0
     inducing_field_declination: float | FloatData = 0.0
+
+    lower_bound: Deprecated | None = None
+
     starting_inclination: float | FloatData | None = None
     starting_declination: float | FloatData | None = None
     reference_inclination: float | FloatData | None = None
     reference_declination: float | FloatData | None = None
-
-    @model_validator(mode="after")
-    def validate_lower_bound(self):
-        if self.lower_bound is not None:
-            warn(
-                "Parameter 'lower_bound' for Magnetic Vector Inversion has been deprecated. "
-                "Defaulting to the negative value of 'upper_bound'.",
-                DeprecationWarning,
-                stacklevel=1,
-            )
-            self.lower_bound = None
-        return self
diff --git a/tests/run_tests/driver_mvi_test.py b/tests/run_tests/driver_mvi_test.py
index 33671e73..c90abf65 100644
--- a/tests/run_tests/driver_mvi_test.py
+++ b/tests/run_tests/driver_mvi_test.py
@@ -10,6 +10,7 @@
 
 from __future__ import annotations
 
+import logging
 from pathlib import Path
 
 import numpy as np
@@ -165,6 +166,7 @@ def test_magnetic_vector_run(
 
 def test_magnetic_vector_bounds_run(
     tmp_path: Path,
+    caplog,
     max_iterations=4,
     pytest=True,
 ):
@@ -185,10 +187,7 @@ def test_magnetic_vector_bounds_run(
 
         # Run the inverse
         active_cells = ActiveCellsOptions(topography_object=topography)
-        with warns(
-            DeprecationWarning,
-            match="Parameter 'lower_bound' for Magnetic Vector Inversion",
-        ):
+        with caplog.at_level(logging.WARNING):
             params = MVIInversionOptions(
                 geoh5=geoh5,
                 mesh=mesh,
@@ -216,6 +215,8 @@ def test_magnetic_vector_bounds_run(
             )
         params.write_ui_json(path=tmp_path / "Inv_run.ui.json")
 
+        assert "Skipping deprecated field: lower_bound" in caplog.text
+
     driver = MVIInversionDriver(params)
     assert np.all(driver.models.lower_bound == -upper_bound)