diff --git a/notebooks/en/rag_zephyr_langchain.ipynb b/notebooks/en/rag_zephyr_langchain.ipynb
index 55738b9..a169f09 100644
--- a/notebooks/en/rag_zephyr_langchain.ipynb
+++ b/notebooks/en/rag_zephyr_langchain.ipynb
@@ -66,7 +66,7 @@
       },
       "outputs": [],
       "source": [
-        "!pip install -q langchain"
+        "!pip install -q langchain langchain-community"
       ]
     },
     {