diff --git a/mp_api/client/routes/materials/electrodes.py b/mp_api/client/routes/materials/electrodes.py
index e2555ac06..4738b3ea5 100644
--- a/mp_api/client/routes/materials/electrodes.py
+++ b/mp_api/client/routes/materials/electrodes.py
@@ -16,7 +16,6 @@ class ElectrodeRester(BaseRester[InsertionElectrodeDoc]):
 
     def search(  # pragma: ignore
         self,
-        material_ids: str | list[str] | None = None,
         battery_ids: str | list[str] | None = None,
         average_voltage: tuple[float, float] | None = None,
         capacity_grav: tuple[float, float] | None = None,
@@ -43,8 +42,6 @@ def search(  # pragma: ignore
         """Query using a variety of search criteria.
 
         Arguments:
-            material_ids (str, List[str]): A single Material ID string or list of strings
-                (e.g., mp-149, [mp-149, mp-13]).
             battery_ids (str, List[str]): A single battery ID string or list of strings
                 (e.g., mp-22526_Li, [mp-22526_Li, mp-22526_Ca]).
             average_voltage (Tuple[float,float]): Minimum and maximum value of the average voltage for a particular
@@ -85,12 +82,6 @@ def search(  # pragma: ignore
         """
         query_params = defaultdict(dict)  # type: dict
 
-        if material_ids:
-            if isinstance(material_ids, str):
-                material_ids = [material_ids]
-
-            query_params.update({"material_ids": ",".join(validate_ids(material_ids))})
-
         if battery_ids:
             if isinstance(battery_ids, str):
                 battery_ids = [battery_ids]
diff --git a/tests/materials/test_electrodes.py b/tests/materials/test_electrodes.py
index 14b28f684..e4541af79 100644
--- a/tests/materials/test_electrodes.py
+++ b/tests/materials/test_electrodes.py
@@ -33,7 +33,6 @@ def rester():
 }  # type: dict
 
 custom_field_tests = {
-    "material_ids": ["mp-16722"],
     "battery_ids": ["mp-16722_Al"],
     "working_ion": Element("Li"),
     "formula": "CoO2",
diff --git a/tests/materials/test_robocrys.py b/tests/materials/test_robocrys.py
index 2b04436a1..74abb4628 100644
--- a/tests/materials/test_robocrys.py
+++ b/tests/materials/test_robocrys.py
@@ -25,9 +25,7 @@ def test_client(rester):
         assert doc.condensed_structure is not None
 
 
-# TODO: switch this to the skipif once emmet PR 1261 is deployed to production
-# @pytest.mark.skipif(os.getenv("MP_API_KEY", None) is None, reason="No API key found.")
-@pytest.mark.skip(reason="Query with large result set fails with faceted pipeline")
+@pytest.mark.skipif(os.getenv("MP_API_KEY", None) is None, reason="No API key found.")
 def test_client_large_result_set(rester):
     search_method = rester.search
 
diff --git a/tests/test_client.py b/tests/test_client.py
index 4001b0234..25bf18124 100644
--- a/tests/test_client.py
+++ b/tests/test_client.py
@@ -36,6 +36,7 @@
     # "tasks",
     # "bonds",
     "materials_xas",
+    "materials_tasks",
     "materials_elasticity",
     "materials_fermi",
     "materials_alloys",
diff --git a/tests/test_mprester.py b/tests/test_mprester.py
index 7c4127d11..8eb55ef02 100644
--- a/tests/test_mprester.py
+++ b/tests/test_mprester.py
@@ -27,8 +27,7 @@
 from pymatgen.entries.computed_entries import ComputedEntry, GibbsComputedStructureEntry
 from pymatgen.io.cif import CifParser
 from pymatgen.io.vasp import Chgcar
-from pymatgen.phonon.bandstructure import PhononBandStructureSymmLine
-from pymatgen.phonon.dos import PhononDos
+from emmet.core.phonon import PhononDOS, PhononBS
 
 from mp_api.client import MPRester
 from mp_api.client.core.client import MPRestError
@@ -291,10 +290,10 @@ def test_get_ion_entries(self, mpr):
 
     def test_get_phonon_data_by_material_id(self, mpr):
         bs = mpr.get_phonon_bandstructure_by_material_id("mp-2172")
-        assert isinstance(bs, PhononBandStructureSymmLine)
+        assert isinstance(bs, PhononBS)
 
         dos = mpr.get_phonon_dos_by_material_id("mp-2172")
-        assert isinstance(dos, PhononDos)
+        assert isinstance(dos, PhononDOS)
 
     def test_get_charge_density_from_material_id(self, mpr):
         chgcar = mpr.get_charge_density_from_material_id("mp-149")