diff --git a/supervision/validators/__init__.py b/supervision/validators/__init__.py
index 44cfcb988..1788708e2 100644
--- a/supervision/validators/__init__.py
+++ b/supervision/validators/__init__.py
@@ -2,6 +2,8 @@
 
 import numpy as np
 
+from supervision.utils.internal import warn_deprecated
+
 
 def validate_xyxy(xyxy: Any) -> None:
     expected_shape = "(_, 4)"
@@ -15,15 +17,29 @@ def validate_xyxy(xyxy: Any) -> None:
 
 
 def validate_mask(mask: Any, n: int) -> None:
+    if mask is None:
+        return
+
     expected_shape = f"({n}, H, W)"
     actual_shape = str(getattr(mask, "shape", None))
-    is_valid = mask is None or (
+    actual_dtype = getattr(mask, "dtype", None)
+
+    is_valid_shape = (
         isinstance(mask, np.ndarray) and len(mask.shape) == 3 and mask.shape[0] == n
     )
-    if not is_valid:
+    if not is_valid_shape:
         raise ValueError(
-            f"mask must be a 3D np.ndarray with shape {expected_shape}, but got shape "
-            f"{actual_shape}"
+            "Mask must be a 3D np.ndarray with shape "
+            + f"{expected_shape}, but got shape {actual_shape}"
+        )
+    if not np.issubdtype(actual_dtype, bool):
+        warn_deprecated(
+            f"A `Detections` object was created with a mask of type {actual_dtype}."
+            " Masks of type other than `bool` are deprecated and may produce unexpected"
+            " behavior. Stricter type checking will be introduced in"
+            " `supervision-0.28.0`. Please use `mask = np.array(..., dtype=bool)` when"
+            " creating the mask manually. If you did not create the mask manually,"
+            " please report the issue to the `supervision` team."
         )
 
 
diff --git a/test/dataset/formats/test_coco.py b/test/dataset/formats/test_coco.py
index 7e269dae4..dc98ad323 100644
--- a/test/dataset/formats/test_coco.py
+++ b/test/dataset/formats/test_coco.py
@@ -227,7 +227,8 @@ def test_group_coco_annotations_by_image_id(
                             [1, 1, 1, 1, 1],
                             [1, 1, 1, 1, 1],
                         ]
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             DoesNotRaise(),
@@ -259,7 +260,8 @@ def test_group_coco_annotations_by_image_id(
                             [1, 1, 1, 1, 1],
                             [1, 1, 1, 1, 1],
                         ]
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             DoesNotRaise(),
@@ -304,7 +306,8 @@ def test_group_coco_annotations_by_image_id(
                             [0, 0, 0, 0, 0],
                             [0, 0, 0, 0, 0],
                         ],
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             DoesNotRaise(),
@@ -349,7 +352,8 @@ def test_group_coco_annotations_by_image_id(
                             [1, 1, 1, 1, 1],
                             [1, 1, 1, 1, 1],
                         ],
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             DoesNotRaise(),
@@ -461,7 +465,8 @@ def test_build_coco_class_index_mapping(
                             [1, 1, 1, 1, 0],
                             [1, 1, 1, 1, 0],
                         ]
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             0,
@@ -490,7 +495,8 @@ def test_build_coco_class_index_mapping(
                             [0, 0, 0, 1, 1],
                             [0, 0, 0, 1, 1],
                         ]
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             0,
@@ -522,7 +528,8 @@ def test_build_coco_class_index_mapping(
                             [1, 1, 0, 0, 1],
                             [1, 1, 1, 1, 1],
                         ]
-                    ]
+                    ],
+                    dtype=bool,
                 ),
             ),
             0,
diff --git a/test/utils/test_internal.py b/test/utils/test_internal.py
index eee614e6c..d90236619 100644
--- a/test/utils/test_internal.py
+++ b/test/utils/test_internal.py
@@ -157,7 +157,7 @@ def __private_property(self):
                 xyxy=np.array([[1, 2, 3, 4], [5, 6, 7, 8]]),
                 class_id=np.array([1, 2]),
                 confidence=np.array([0.1, 0.2]),
-                mask=np.array([[[1]], [[2]]]),
+                mask=np.array([[[1]], [[2]]], dtype=bool),
                 tracker_id=np.array([1, 2]),
                 data={"key_1": [1, 2], "key_2": [3, 4]},
             ),