diff --git a/demo.ipynb b/demo.ipynb
index 55d2b7cb..b5aa7c5e 100644
--- a/demo.ipynb
+++ b/demo.ipynb
@@ -972,7 +972,7 @@
     }
    ],
    "source": [
-    "from supervision.assets import download_assets, VideoAssets\n",
+    "from supervision.assets import VideoAssets, download_assets\n",
     "\n",
     "download_assets(VideoAssets.VEHICLES)\n",
     "VIDEO_PATH = VideoAssets.VEHICLES.value"
diff --git a/test/annotators/test_utils.py b/test/annotators/test_utils.py
index 1344d213..588f0242 100644
--- a/test/annotators/test_utils.py
+++ b/test/annotators/test_utils.py
@@ -1,5 +1,4 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 from typing import Optional
 
 import numpy as np
@@ -7,6 +6,7 @@ import pytest
 
 from supervision.annotators.utils import ColorLookup, resolve_color_idx
 from supervision.detection.core import Detections
+from test.test_utils import mock_detections
 
 
 @pytest.mark.parametrize(
diff --git a/test/dataset/formats/test_pascal_voc.py b/test/dataset/formats/test_pascal_voc.py
index bce29271..80d83cc7 100644
--- a/test/dataset/formats/test_pascal_voc.py
+++ b/test/dataset/formats/test_pascal_voc.py
@@ -1,16 +1,16 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 from typing import List, Optional
 
-import defusedxml.ElementTree as ET
 import numpy as np
 import pytest
+from defusedxml import ElementTree
 
 from supervision.dataset.formats.pascal_voc import (
     detections_from_xml_obj,
     object_to_pascal_voc,
     parse_polygon_points,
 )
+from test.test_utils import mock_detections
 
 
 def are_xml_elements_equal(elem1, elem2):
@@ -36,7 +36,7 @@ def are_xml_elements_equal(elem1, elem2):
             np.array([0, 0, 10, 10]),
             "test",
             None,
-            ET.fromstring(
+            ElementTree.fromstring(
                 """<object><name>test</name><bndbox><xmin>1</xmin><ymin>1</ymin>
                 <xmax>11</xmax><ymax>11</ymax></bndbox></object>"""
             ),
@@ -46,7 +46,7 @@ def are_xml_elements_equal(elem1, elem2):
             np.array([0, 0, 10, 10]),
             "test",
             np.array([[0, 0], [10, 0], [10, 10], [0, 10]]),
-            ET.fromstring(
+            ElementTree.fromstring(
                 """<object><name>test</name><bndbox><xmin>1</xmin><ymin>1</ymin>
                 <xmax>11</xmax><ymax>11</ymax>
                 </bndbox><polygon><x1>1</x1><y1>1</y1><x2>11</x2>
@@ -73,7 +73,7 @@ def test_object_to_pascal_voc(
     "polygon_element, expected_result, exception",
     [
         (
-            ET.fromstring(
+            ElementTree.fromstring(
                 """<polygon><x1>0</x1><y1>0</y1><x2>10</x2><y2>0</y2><x3>10</x3>
                     <y3>10</y3><x4>0</x4><y4>10</y4></polygon>"""
             ),
@@ -160,6 +160,6 @@ def test_detections_from_xml_obj(
     xml_string, classes, resolution_wh, force_masks, expected_result, exception
 ):
     with exception:
-        root = ET.fromstring(xml_string)
+        root = ElementTree.fromstring(xml_string)
         result, _ = detections_from_xml_obj(root, classes, resolution_wh, force_masks)
         assert result == expected_result
diff --git a/test/dataset/test_core.py b/test/dataset/test_core.py
index 4a75225c..fdfe1475 100644
--- a/test/dataset/test_core.py
+++ b/test/dataset/test_core.py
@@ -1,11 +1,11 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 from typing import List, Optional
 
 import numpy as np
 import pytest
 
 from supervision import DetectionDataset
+from test.test_utils import mock_detections
 
 
 @pytest.mark.parametrize(
diff --git a/test/dataset/test_utils.py b/test/dataset/test_utils.py
index 41e1da5b..67893abc 100644
--- a/test/dataset/test_utils.py
+++ b/test/dataset/test_utils.py
@@ -1,5 +1,4 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 from typing import Dict, List, Optional, Tuple, TypeVar
 
 import numpy as np
@@ -15,6 +14,7 @@ from supervision.dataset.utils import (
     rle_to_mask,
     train_test_split,
 )
+from test.test_utils import mock_detections
 
 T = TypeVar("T")
 
diff --git a/test/detection/test_core.py b/test/detection/test_core.py
index 300d6dfe..b857250e 100644
--- a/test/detection/test_core.py
+++ b/test/detection/test_core.py
@@ -1,5 +1,4 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 from typing import List, Optional, Union
 
 import numpy as np
@@ -7,6 +6,7 @@ import pytest
 
 from supervision.detection.core import Detections, merge_inner_detection_object_pair
 from supervision.geometry.core import Position
+from test.test_utils import mock_detections
 
 PREDICTIONS = np.array(
     [
diff --git a/test/detection/test_csv.py b/test/detection/test_csv.py
index c3444494..e1414424 100644
--- a/test/detection/test_csv.py
+++ b/test/detection/test_csv.py
@@ -1,11 +1,11 @@
 import csv
 import os
-from test.test_utils import mock_detections
 from typing import Any, Dict, List
 
 import pytest
 
 import supervision as sv
+from test.test_utils import mock_detections
 
 
 @pytest.mark.parametrize(
diff --git a/test/detection/test_json.py b/test/detection/test_json.py
index 760c2db3..d5f24924 100644
--- a/test/detection/test_json.py
+++ b/test/detection/test_json.py
@@ -1,11 +1,11 @@
 import json
 import os
-from test.test_utils import mock_detections
 from typing import Any, Dict, List
 
 import pytest
 
 import supervision as sv
+from test.test_utils import mock_detections
 
 
 @pytest.mark.parametrize(
diff --git a/test/detection/test_line_counter.py b/test/detection/test_line_counter.py
index 66118e97..b7e4d33d 100644
--- a/test/detection/test_line_counter.py
+++ b/test/detection/test_line_counter.py
@@ -1,11 +1,11 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 from typing import List, Optional, Tuple
 
 import pytest
 
 from supervision import LineZone
 from supervision.geometry.core import Point, Position, Vector
+from test.test_utils import mock_detections
 
 
 @pytest.mark.parametrize(
diff --git a/test/detection/test_polygonzone.py b/test/detection/test_polygonzone.py
index ed899615..a631ff17 100644
--- a/test/detection/test_polygonzone.py
+++ b/test/detection/test_polygonzone.py
@@ -1,10 +1,10 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import mock_detections
 
 import numpy as np
 import pytest
 
 import supervision as sv
+from test.test_utils import mock_detections
 
 DETECTION_BOXES = np.array(
     [
diff --git a/test/metrics/test_detection.py b/test/metrics/test_detection.py
index 7cb92c46..b2313bdd 100644
--- a/test/metrics/test_detection.py
+++ b/test/metrics/test_detection.py
@@ -1,5 +1,4 @@
 from contextlib import ExitStack as DoesNotRaise
-from test.test_utils import assert_almost_equal, mock_detections
 from typing import Optional, Union
 
 import numpy as np
@@ -11,6 +10,7 @@ from supervision.metrics.detection import (
     MeanAveragePrecision,
     detections_to_tensor,
 )
+from test.test_utils import assert_almost_equal, mock_detections
 
 CLASSES = np.arange(80)
 NUM_CLASSES = len(CLASSES)
diff --git a/test/test_utils.py b/test/test_utils.py
index b676cb54..ce1bc136 100644
--- a/test/test_utils.py
+++ b/test/test_utils.py
@@ -1,13 +1,14 @@
 from typing import Any, Dict, List, Optional
 
 import numpy as np
+import numpy.typing as npt
 
 from supervision.detection.core import Detections
 from supervision.keypoint.core import KeyPoints
 
 
 def mock_detections(
-    xyxy: List[List[float]],
+    xyxy: npt.NDArray[np.float32],
     mask: Optional[List[np.ndarray]] = None,
     confidence: Optional[List[float]] = None,
     class_id: Optional[List[int]] = None,
@@ -32,7 +33,7 @@ def mock_detections(
 
 
 def mock_keypoints(
-    xy: List[List[float]],
+    xy: npt.NDArray[np.float32],
     confidence: Optional[List[float]] = None,
     class_id: Optional[List[int]] = None,
     data: Optional[Dict[str, List[Any]]] = None,