diff --git a/PyTorch/Segmentation/nnUNet/nnunet_for_pytorch_21.11.0.def b/PyTorch/Segmentation/nnUNet/nnunet_for_pytorch_21.11.0.def
index a87af2aa4cddb3d217a93949aadcfa089e8b2d3e..31fa8fe6ab5fc4a64505adc961e9bd3a3ead0c70 100644
--- a/PyTorch/Segmentation/nnUNet/nnunet_for_pytorch_21.11.0.def
+++ b/PyTorch/Segmentation/nnUNet/nnunet_for_pytorch_21.11.0.def
@@ -16,7 +16,7 @@ cd /workspace/nnunet_pyt
 wget --content-disposition https://api.ngc.nvidia.com/v2/resources/nvidia/nnunet_for_pytorch/versions/$VERSION/zip -O nnunet_for_pytorch_$VERSION.zip
 unzip nnunet_for_pytorch_21.11.0.zip
 
-sed 's/pytorch-lightning==1.3.8/pytorch-lightning==1.5.0/g' requirements.txt > temp_file && mv temp_file requirements.txt
+#sed 's/pytorch-lightning==1.3.8/pytorch-lightning==1.5.0/g' requirements.txt > temp_file && mv temp_file requirements.txt
 pip install --disable-pip-version-check -r requirements.txt
 pip install monai==0.8.0 --no-dependencies
 pip uninstall -y torchtext