diff --git a/setup.cfg b/setup.cfg
index 6ff2d41cd..5bd19db51 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -35,7 +35,7 @@ install_requires =
     xarray
     doct
     databroker
-    dls-dodal @ git+https://github.com/DiamondLightSource/dodal.git@c9f6a89eea84cb2a01d0b1d0f28805acc3c3f9a4
+    dls-dodal @ git+https://github.com/DiamondLightSource/dodal.git@ca9d6df8f17f88ce0128af9cbdfd40d0cfc44a26
     pydantic<2.0 # See https://github.com/DiamondLightSource/hyperion/issues/774
     scipy
     pyzmq<25 # See https://github.com/DiamondLightSource/hyperion/issues/1103
diff --git a/src/hyperion/experiment_plans/flyscan_xray_centre_plan.py b/src/hyperion/experiment_plans/flyscan_xray_centre_plan.py
index 7f1bb07eb..1e56c44e2 100755
--- a/src/hyperion/experiment_plans/flyscan_xray_centre_plan.py
+++ b/src/hyperion/experiment_plans/flyscan_xray_centre_plan.py
@@ -132,11 +132,11 @@ def set_aperture_for_bbox_size(
     @bpp.run_decorator(
         md={
             "subplan_name": "change_aperture",
-            "aperture_size": new_selected_aperture.name,
+            "aperture_size": new_selected_aperture.GDA_name,
         }
     )
     def set_aperture():
-        yield from bps.abs_set(aperture_device, new_selected_aperture.location)
+        yield from bps.abs_set(aperture_device, new_selected_aperture)
 
     yield from set_aperture()
 
diff --git a/src/hyperion/external_interaction/callbacks/aperture_change_callback.py b/src/hyperion/external_interaction/callbacks/aperture_change_callback.py
index 0d89a88d1..d90c5362c 100644
--- a/src/hyperion/external_interaction/callbacks/aperture_change_callback.py
+++ b/src/hyperion/external_interaction/callbacks/aperture_change_callback.py
@@ -5,6 +5,8 @@
 
 
 class ApertureChangeCallback(CallbackBase):
+    """A callback that's used to send the selected aperture back to GDA"""
+
     def __init__(self, *args, **kwargs) -> None:
         super().__init__(*args, **kwargs)
         self.last_selected_aperture: str = "NONE"
diff --git a/tests/conftest.py b/tests/conftest.py
index 07b885bca..326f470f3 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -382,29 +382,35 @@ def aperture_scatterguard(done_status):
             SingleAperturePosition(
                 location=ApertureFiveDimensionalLocation(0, 1, 2, 3, 4),
                 name="Large",
+                GDA_name="LARGE_APERTURE",
                 radius_microns=100,
             ),
             SingleAperturePosition(
-                location=ApertureFiveDimensionalLocation(5, 6, 7, 8, 9),
+                location=ApertureFiveDimensionalLocation(5, 6, 2, 8, 9),
                 name="Medium",
+                GDA_name="MEDIUM_APERTURE",
                 radius_microns=50,
             ),
             SingleAperturePosition(
-                location=ApertureFiveDimensionalLocation(10, 11, 12, 13, 14),
+                location=ApertureFiveDimensionalLocation(10, 11, 2, 13, 14),
                 name="Small",
+                GDA_name="SMALL_APERTURE",
                 radius_microns=20,
             ),
             SingleAperturePosition(
-                location=ApertureFiveDimensionalLocation(15, 16, 17, 18, 19),
+                location=ApertureFiveDimensionalLocation(15, 16, 2, 18, 19),
                 name="Robot_load",
+                GDA_name="ROBOT_LOAD",
                 radius_microns=None,
             ),
         ),
     )
+    ap_sg.aperture.z.user_setpoint.sim_put(2)  # type: ignore
     ap_sg.aperture.z.motor_done_move.sim_put(1)  # type: ignore
     with patch_motor(ap_sg.aperture.x), patch_motor(ap_sg.aperture.y), patch_motor(
         ap_sg.aperture.z
     ), patch_motor(ap_sg.scatterguard.x), patch_motor(ap_sg.scatterguard.y):
+        ap_sg.set(ap_sg.aperture_positions.SMALL)  # type: ignore
         yield ap_sg
 
 
diff --git a/tests/system_tests/experiment_plans/test_fgs_plan.py b/tests/system_tests/experiment_plans/test_fgs_plan.py
index 6a670b7f6..e80b42bad 100644
--- a/tests/system_tests/experiment_plans/test_fgs_plan.py
+++ b/tests/system_tests/experiment_plans/test_fgs_plan.py
@@ -78,7 +78,7 @@ def fgs_composite():
     )
     composite.aperture_scatterguard.load_aperture_positions(aperture_positions)
     composite.aperture_scatterguard.aperture.z.move(
-        aperture_positions.LARGE[2], wait=True
+        aperture_positions.LARGE.location[2], wait=True
     )
     composite.eiger.cam.manual_trigger.put("Yes")
     composite.eiger.odin.check_odin_initialised = lambda: (True, "")
diff --git a/tests/unit_tests/experiment_plans/test_flyscan_xray_centre_plan.py b/tests/unit_tests/experiment_plans/test_flyscan_xray_centre_plan.py
index 2ebdd4204..cd1e0352c 100644
--- a/tests/unit_tests/experiment_plans/test_flyscan_xray_centre_plan.py
+++ b/tests/unit_tests/experiment_plans/test_flyscan_xray_centre_plan.py
@@ -7,10 +7,6 @@
 import pytest
 from bluesky.run_engine import RunEngine
 from bluesky.utils import FailedStatus
-from dodal.devices.aperturescatterguard import (
-    ApertureFiveDimensionalLocation,
-    SingleAperturePosition,
-)
 from dodal.devices.detector.det_dim_constants import (
     EIGER2_X_4M_DIMENSION,
     EIGER_TYPE_EIGER2_X_4M,
@@ -199,19 +195,8 @@ def test_read_hardware_for_ispyb_updates_from_ophyd_devices(
         flux_test_value = 10.0
         fake_fgs_composite.flux.flux_reading.sim_put(flux_test_value)  # type: ignore
 
-        test_aperture = SingleAperturePosition(
-            name="Large",
-            radius_microns=100,
-            location=ApertureFiveDimensionalLocation(
-                aperture_x=0,
-                aperture_y=1.0005,  # only here departs from the Large position described in conftest.py fixture
-                aperture_z=2,
-                scatterguard_x=3,
-                scatterguard_y=4,
-            ),
-        )
-        fake_fgs_composite.aperture_scatterguard.selected_aperture.put(
-            test_aperture.location
+        fake_fgs_composite.aperture_scatterguard.set(
+            fake_fgs_composite.aperture_scatterguard.aperture_positions.LARGE  # type: ignore
         )
         set_sim_value(fake_fgs_composite.robot.barcode.bare_signal, ["BARCODE"])