diff --git a/README.md b/README.md
index c6fd697..13d6a18 100644
--- a/README.md
+++ b/README.md
@@ -46,7 +46,7 @@ pip install torch==1.9.0+cu111 torchvision==0.10.0+cu111 torchaudio==0.9.0 -f ht
 Install other required Python packages:
 
 ```sh
-pip install ftfy regex tqdm omegaconf pytorch-lightning IPython kornia imageio imageio-ffmpeg einops torch_optimizer
+pip install ftfy regex tqdm omegaconf pytorch-lightning IPython kornia imageio imageio-ffmpeg einops torch_optimizer==0.3.0
 ```
 
 Clone required repositories: