diff --git a/README.md b/README.md
index 348bc8d..23dec1f 100644
--- a/README.md
+++ b/README.md
@@ -65,6 +65,7 @@ pip install mmcv-full==1.3.14 -f https://download.openmmlab.com/mmcv/dist/cu111/
 pip install mmsegmentation==0.18.0
 pip install webdataset==0.1.103
 pip install timm==0.4.12
+pip install webdataset==0.1.103
 git clone https://github.com/NVIDIA/apex
 cd && apex && pip install -v --disable-pip-version-check --no-cache-dir --global-option="--cpp_ext" --global-option="--cuda_ext" ./
 pip install opencv-python==4.4.0.46 termcolor==1.1.0 diffdist einops omegaconf