diff --git a/learn/generation/langchain/handbook/05-langchain-retrieval-augmentation.ipynb b/learn/generation/langchain/handbook/05-langchain-retrieval-augmentation.ipynb
index 5e39ade3..09335be7 100644
--- a/learn/generation/langchain/handbook/05-langchain-retrieval-augmentation.ipynb
+++ b/learn/generation/langchain/handbook/05-langchain-retrieval-augmentation.ipynb
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