diff --git a/tests/io/test_cameras.py b/tests/io/test_cameras.py
index 30c2771d2..84e26b9f3 100644
--- a/tests/io/test_cameras.py
+++ b/tests/io/test_cameras.py
@@ -763,6 +763,34 @@ def test_instance_group(
     assert cam not in instance_group.cameras
 
 
+def test_instance_group_update_points_from_2d(
+    multiview_min_session_frame_groups: Labels,
+):
+
+    labels = multiview_min_session_frame_groups
+    session: RecordingSession = labels.sessions[0]
+    frame_idx = 0
+    frame_group = session.frame_groups[frame_idx]
+    instance_group = frame_group.instance_groups[0]
+
+    # Test `update_points_from_2d` (all in bounds, all updated)
+    n_cameras = len(frame_group.cams_to_include)
+    n_instance_groups = 1
+    n_nodes = len(frame_group.session.labels.skeleton.nodes)
+    n_coords = 2
+    value = 100
+    points = np.full((n_cameras, n_nodes, n_coords), value)
+    projection_bounds = frame_group.session.projection_bounds
+    cams_to_include = frame_group.cams_to_include
+    instance_group.update_points_from_2d(
+        points_reprojected=points,
+        projection_bounds=projection_bounds,
+        cams_to_include=cams_to_include,
+        exclude_complete=False,
+    )
+    assert np.all(instance_group.numpy(invisible_as_nan=False) == value)
+
+
 def test_frame_group(
     multiview_min_session_labels: Labels, multiview_min_session_frame_groups: Labels
 ):