diff --git a/py/torch_tensorrt/_Input.py b/py/torch_tensorrt/_Input.py
index 796b8c6253..5ecaaa2862 100644
--- a/py/torch_tensorrt/_Input.py
+++ b/py/torch_tensorrt/_Input.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from enum import Enum
 from typing import Any, Dict, List, Optional, Sequence, Tuple
 
@@ -32,11 +34,11 @@ class _ShapeMode(Enum):
     shape: Optional[
         Tuple[int, ...] | Dict[str, Tuple[int, ...]]
     ] = None  #: Either a single Tuple or a dict of tuples defining the input shape. Static shaped inputs will have a single tuple. Dynamic inputs will have a dict of the form ``{ "min_shape": Tuple, "opt_shape": Tuple, "max_shape": Tuple }``
-    dtype: _enums.dtype = (  # type: ignore[name-defined]
+    dtype: _enums.dtype = (
         _enums.dtype.unknown
     )  #: The expected data type of the input tensor (default: torch_tensorrt.dtype.float32)
     _explicit_set_dtype: bool = False
-    format: _enums.TensorFormat = (  # type: ignore[name-defined]
+    format: _enums.TensorFormat = (
         _enums.TensorFormat.contiguous
     )  #: The expected format of the input tensor (default: torch_tensorrt.TensorFormat.NCHW)
 
@@ -208,7 +210,7 @@ def _supported_input_size_type(input_size: Any) -> bool:
             return False
 
     @staticmethod
-    def _parse_dtype(dtype: Any) -> _enums.dtype:  # type: ignore[name-defined]
+    def _parse_dtype(dtype: Any) -> _enums.dtype:
         if isinstance(dtype, torch.dtype):
             if dtype == torch.long:
                 return _enums.dtype.long
@@ -236,7 +238,7 @@ def _parse_dtype(dtype: Any) -> _enums.dtype:  # type: ignore[name-defined]
             )
 
     @staticmethod
-    def _to_torch_dtype(dtype: _enums.dtype) -> torch.dtype:  # type: ignore[name-defined]
+    def _to_torch_dtype(dtype: _enums.dtype) -> torch.dtype:
         if dtype == _enums.dtype.long:
             return torch.long
         elif dtype == _enums.dtype.int32:
@@ -255,7 +257,7 @@ def is_trt_dtype(self) -> bool:
         return bool(self.dtype != _enums.dtype.long)
 
     @staticmethod
-    def _parse_format(format: Any) -> _enums.TensorFormat:  # type: ignore[name-defined]
+    def _parse_format(format: Any) -> _enums.TensorFormat:
         if isinstance(format, torch.memory_format):
             if format == torch.contiguous_format:
                 return _enums.TensorFormat.contiguous
diff --git a/py/torch_tensorrt/_compile.py b/py/torch_tensorrt/_compile.py
index 8a95d6eada..fc1c0d30d8 100644
--- a/py/torch_tensorrt/_compile.py
+++ b/py/torch_tensorrt/_compile.py
@@ -1,5 +1,7 @@
+from __future__ import annotations
+
 from enum import Enum
-from typing import Any, Callable, List, Optional, Sequence, Set, TypeGuard
+from typing import Any, Callable, List, Optional, Sequence, Set
 
 import torch
 import torch.fx
@@ -12,6 +14,7 @@
 from torch_tensorrt.fx.lower import compile as fx_compile
 from torch_tensorrt.fx.utils import LowerPrecision
 from torch_tensorrt.ts._compiler import compile as torchscript_compile
+from typing_extensions import TypeGuard
 
 
 def _non_fx_input_interface(
diff --git a/py/torch_tensorrt/dynamo/aten_tracer.py b/py/torch_tensorrt/dynamo/aten_tracer.py
index 3ff41bac3d..39e1ea7c9d 100644
--- a/py/torch_tensorrt/dynamo/aten_tracer.py
+++ b/py/torch_tensorrt/dynamo/aten_tracer.py
@@ -1,7 +1,9 @@
+from __future__ import annotations
+
 import copy
 import sys
 from contextlib import contextmanager
-from typing import Any, Callable, Dict, Generator, List, Optional, Tuple
+from typing import Any, Callable, Dict, Generator, List, Optional, Tuple, Union
 
 import torch
 import torch._dynamo as torchdynamo
@@ -22,7 +24,7 @@
 )
 from typing_extensions import TypeAlias
 
-Value: TypeAlias = Tuple["Value", ...] | List["Value"] | Dict[str, "Value"]
+Value: TypeAlias = Union[Tuple["Value", ...], List["Value"], Dict[str, "Value"]]
 
 
 class DynamoConfig:
diff --git a/py/torch_tensorrt/dynamo/backend/backends.py b/py/torch_tensorrt/dynamo/backend/backends.py
index ca14ad264b..5d31789b92 100644
--- a/py/torch_tensorrt/dynamo/backend/backends.py
+++ b/py/torch_tensorrt/dynamo/backend/backends.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 from functools import partial
 from typing import Any, Callable, Sequence
diff --git a/py/torch_tensorrt/dynamo/compile.py b/py/torch_tensorrt/dynamo/compile.py
index 0402a6af43..1cc3474883 100644
--- a/py/torch_tensorrt/dynamo/compile.py
+++ b/py/torch_tensorrt/dynamo/compile.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import collections.abc
 import logging
 from typing import Any, List, Optional, Set, Tuple
diff --git a/py/torch_tensorrt/dynamo/conversion/conversion.py b/py/torch_tensorrt/dynamo/conversion/conversion.py
index ae3c8b66b2..5c9bbd8c70 100644
--- a/py/torch_tensorrt/dynamo/conversion/conversion.py
+++ b/py/torch_tensorrt/dynamo/conversion/conversion.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import io
 from typing import Sequence
 
diff --git a/py/torch_tensorrt/dynamo/conversion/converter_registry.py b/py/torch_tensorrt/dynamo/conversion/converter_registry.py
index 7275844500..c883092166 100644
--- a/py/torch_tensorrt/dynamo/conversion/converter_registry.py
+++ b/py/torch_tensorrt/dynamo/conversion/converter_registry.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 from dataclasses import dataclass, field
 from enum import Enum, auto
@@ -28,7 +30,7 @@
         Dict[str, Argument],
         str,
     ],
-    TRTTensor | Sequence[TRTTensor],
+    Union[TRTTensor, Sequence[TRTTensor]],
 ]
 
 
diff --git a/py/torch_tensorrt/dynamo/conversion/impl/shape.py b/py/torch_tensorrt/dynamo/conversion/impl/shape.py
index 86c126552b..8bd137d991 100644
--- a/py/torch_tensorrt/dynamo/conversion/impl/shape.py
+++ b/py/torch_tensorrt/dynamo/conversion/impl/shape.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import List, Optional, Tuple
 
 import numpy as np
diff --git a/py/torch_tensorrt/dynamo/conversion/truncate_long_and_double.py b/py/torch_tensorrt/dynamo/conversion/truncate_long_and_double.py
index 5cb5d118be..c6c10f475a 100644
--- a/py/torch_tensorrt/dynamo/conversion/truncate_long_and_double.py
+++ b/py/torch_tensorrt/dynamo/conversion/truncate_long_and_double.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Optional, Sequence, Set
 
 import torch
diff --git a/py/torch_tensorrt/dynamo/lowering/_pre_aot_lowering.py b/py/torch_tensorrt/dynamo/lowering/_pre_aot_lowering.py
index 32250607df..e69b9987c7 100644
--- a/py/torch_tensorrt/dynamo/lowering/_pre_aot_lowering.py
+++ b/py/torch_tensorrt/dynamo/lowering/_pre_aot_lowering.py
@@ -1,10 +1,13 @@
+from __future__ import annotations
+
 import logging
 from dataclasses import dataclass
-from typing import Any, Callable, Dict, Optional, Type, TypeAlias
+from typing import Any, Callable, Dict, Optional, Type
 
 import torch
 from torch._ops import OpOverload
 from torch.fx import GraphModule, Node
+from typing_extensions import TypeAlias
 
 logger = logging.getLogger(__name__)
 
diff --git a/py/torch_tensorrt/dynamo/runtime/_PythonTorchTensorRTModule.py b/py/torch_tensorrt/dynamo/runtime/_PythonTorchTensorRTModule.py
index b5760161a6..e00b66d8f3 100644
--- a/py/torch_tensorrt/dynamo/runtime/_PythonTorchTensorRTModule.py
+++ b/py/torch_tensorrt/dynamo/runtime/_PythonTorchTensorRTModule.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any, Dict, List, Optional, Sequence, Tuple
 
 import torch
diff --git a/py/torch_tensorrt/dynamo/runtime/_TorchTensorRTModule.py b/py/torch_tensorrt/dynamo/runtime/_TorchTensorRTModule.py
index bddee9b93b..d5ad5021e2 100644
--- a/py/torch_tensorrt/dynamo/runtime/_TorchTensorRTModule.py
+++ b/py/torch_tensorrt/dynamo/runtime/_TorchTensorRTModule.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 from typing import Any, List, Optional, Tuple
 
diff --git a/py/torch_tensorrt/dynamo/utils.py b/py/torch_tensorrt/dynamo/utils.py
index bbb1a4354b..cec328e84f 100644
--- a/py/torch_tensorrt/dynamo/utils.py
+++ b/py/torch_tensorrt/dynamo/utils.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 import logging
 from dataclasses import fields, replace
 from typing import Any, Callable, Dict, Optional, Sequence
diff --git a/py/torch_tensorrt/ts/_compile_spec.py b/py/torch_tensorrt/ts/_compile_spec.py
index 6803259985..b9a84152e1 100644
--- a/py/torch_tensorrt/ts/_compile_spec.py
+++ b/py/torch_tensorrt/ts/_compile_spec.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from copy import deepcopy
 from typing import Any, Dict, List, Optional, Set
 
@@ -39,7 +41,7 @@ def _supported_input_size_type(input_size: Any) -> bool:
         )
 
 
-def _parse_op_precision(precision: Any) -> _enums.dtype:  # type: ignore[name-defined]
+def _parse_op_precision(precision: Any) -> _enums.dtype:
     if isinstance(precision, torch.dtype):
         if precision == torch.int8:
             return _enums.dtype.int8
@@ -63,7 +65,7 @@ def _parse_op_precision(precision: Any) -> _enums.dtype:  # type: ignore[name-de
         )
 
 
-def _parse_enabled_precisions(precisions: Any) -> Set[_enums.dtype]:  # type: ignore[name-defined]
+def _parse_enabled_precisions(precisions: Any) -> Set[_enums.dtype]:
     parsed_precisions = set()
     if any(isinstance(precisions, type) for type in [list, tuple, set]):
         for p in precisions:
@@ -73,7 +75,7 @@ def _parse_enabled_precisions(precisions: Any) -> Set[_enums.dtype]:  # type: ig
     return parsed_precisions
 
 
-def _parse_device_type(device: Any) -> _enums.DeviceType:  # type: ignore[name-defined]
+def _parse_device_type(device: Any) -> _enums.DeviceType:
     if isinstance(device, torch.device):
         if device.type == "cuda":
             return _C.DeviceType.gpu
@@ -346,10 +348,10 @@ def TensorRTCompileSpec(
     device: torch.device | Device = Device._current_device(),
     disable_tf32: bool = False,
     sparse_weights: bool = False,
-    enabled_precisions: Optional[Set[torch.dtype | _enums.dtype]] = None,  # type: ignore[name-defined]
+    enabled_precisions: Optional[Set[torch.dtype | _enums.dtype]] = None,
     refit: bool = False,
     debug: bool = False,
-    capability: _enums.EngineCapability = _enums.EngineCapability.default,  # type: ignore[name-defined]
+    capability: _enums.EngineCapability = _enums.EngineCapability.default,
     num_avg_timing_iters: int = 1,
     workspace_size: int = 0,
     dla_sram_size: int = 1048576,
diff --git a/py/torch_tensorrt/ts/_compiler.py b/py/torch_tensorrt/ts/_compiler.py
index 30828ce5d8..4a9bb53dc0 100644
--- a/py/torch_tensorrt/ts/_compiler.py
+++ b/py/torch_tensorrt/ts/_compiler.py
@@ -1,3 +1,5 @@
+from __future__ import annotations
+
 from typing import Any, List, Optional, Sequence, Set, Tuple
 
 import torch