diff --git a/mmdet/__init__.py b/mmdet/__init__.py
index 1f8ee169..a2323f15 100644
--- a/mmdet/__init__.py
+++ b/mmdet/__init__.py
@@ -1,4 +1,5 @@
 # Copyright (c) OpenMMLab. All rights reserved.
+# Copyright 2024 Huawei Technologies Co., Ltd
 import mmcv
 
 from .version import __version__, short_version
@@ -17,7 +18,7 @@ def digit_version(version_str):
 
 
 mmcv_minimum_version = '1.3.17'
-mmcv_maximum_version = '1.6.0'
+mmcv_maximum_version = '1.7.2'
 mmcv_version = digit_version(mmcv.__version__)
 
 
@@ -26,4 +27,4 @@ assert (mmcv_version >= digit_version(mmcv_minimum_version)
     f'MMCV=={mmcv.__version__} is used but incompatible. ' \
     f'Please install mmcv>={mmcv_minimum_version}, <={mmcv_maximum_version}.'
 
-__all__ = ['__version__', 'short_version']
+__all__ = ['__version__', 'short_version']
\ No newline at end of file
diff --git a/mmdet/models/backbones/resnet.py b/mmdet/models/backbones/resnet.py
index 1eaaae67..a655fd80 100644
--- a/mmdet/models/backbones/resnet.py
+++ b/mmdet/models/backbones/resnet.py
@@ -1,11 +1,16 @@
 # Copyright (c) OpenMMLab. All rights reserved.
+# Copyright 2024 Huawei Technologies Co., Ltd
 import warnings
+import torch
+import torch_npu
 
 import torch.nn as nn
 import torch.utils.checkpoint as cp
 from mmcv.cnn import build_conv_layer, build_norm_layer, build_plugin_layer
 from mmcv.runner import BaseModule
 from torch.nn.modules.batchnorm import _BatchNorm
+import mx_driving.fused
+
 
 from ..builder import BACKBONES
 from ..utils import ResLayer
@@ -288,7 +293,7 @@ class Bottleneck(BaseModule):
             if self.downsample is not None:
                 identity = self.downsample(x)
 
-            out += identity
+            out = mx_driving.fused.npu_add_relu(out, identity)
 
             return out
 
@@ -297,8 +302,6 @@ class Bottleneck(BaseModule):
         else:
             out = _inner_forward(x)
 
-        out = self.relu(out)
-
         return out