diff --git a/py/torch_tensorrt/dynamo/utils.py b/py/torch_tensorrt/dynamo/utils.py
index 85aa663809..95e5f30e4d 100644
--- a/py/torch_tensorrt/dynamo/utils.py
+++ b/py/torch_tensorrt/dynamo/utils.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import logging
+import warnings
 from dataclasses import fields, replace
 from enum import Enum
 from typing import Any, Callable, Dict, List, Optional, Sequence, Tuple, Union
@@ -10,6 +11,8 @@
 import tensorrt as trt
 import torch
 from torch._subclasses.fake_tensor import FakeTensor
+
+from packaging import version
 from torch_tensorrt._Device import Device
 from torch_tensorrt._enums import dtype
 from torch_tensorrt._features import ENABLED_FEATURES
@@ -19,8 +22,6 @@
 from torch_tensorrt.dynamo._engine_cache import BaseEngineCache
 from torch_tensorrt.dynamo._settings import CompilationSettings
 
-from packaging import version
-
 from .types import TRTDataType
 
 logger = logging.getLogger(__name__)
@@ -494,6 +495,27 @@ def parse_dynamo_kwargs(
         if "options" in kwargs and len(kwargs) == 1:
             kwargs = kwargs["options"]
 
+        if "truncate_long_and_double" in kwargs:
+            if (
+                "truncate_double" in kwargs
+                and kwargs["truncate_double"] is not _defaults.TRUNCATE_DOUBLE
+            ):
+                raise ValueError(
+                    'Provided configuration for "truncate_double" and deprecated API "truncate_long_and_double". '
+                    'Please only use "truncate_double".'
+                )
+            else:
+                kwargs["truncate_double"] = kwargs["truncate_long_and_double"]
+                warnings.warn(
+                    'Compiler option "truncate_long_and_double" is deprecated in favor of "truncate_double" as int64 is now natively supported. '
+                    "This option will be removed in the next version.",
+                    DeprecationWarning,
+                    stacklevel=2,
+                )
+                del kwargs[
+                    "truncate_long_and_double"
+                ]  # Remove deprecated key after handling
+
         valid_attrs = {attr.name for attr in fields(settings)}
         valid_kwargs = {k: v for k, v in kwargs.items() if k in valid_attrs}
         settings = replace(settings, **valid_kwargs)