diff --git a/src/marshmallow/fields.py b/src/marshmallow/fields.py
index ceb32aa91..3d3bec961 100644
--- a/src/marshmallow/fields.py
+++ b/src/marshmallow/fields.py
@@ -1285,6 +1285,8 @@ def _serialize(self, value, attr, obj, **kwargs) -> str | float | None:
         return value.strftime(data_format)
 
     def _deserialize(self, value, attr, data, **kwargs) -> dt.datetime:
+        if value is True or value is False:
+            raise self.make_error("invalid", input=value, obj_type=self.OBJ_TYPE)
         data_format = self.format or self.DEFAULT_FORMAT
         func = self.DESERIALIZATION_FUNCS.get(data_format)
         try:
diff --git a/tests/test_deserialization.py b/tests/test_deserialization.py
index 4588e2a7d..442b5efbd 100644
--- a/tests/test_deserialization.py
+++ b/tests/test_deserialization.py
@@ -422,6 +422,8 @@ def test_field_toggle_show_invalid_value_in_error_message(self):
         [
             "not-a-datetime",
             42,
+            True,
+            False,
             0,
             "",
             [],