diff --git a/notebooks/car_negotiation.ipynb b/notebooks/car_negotiation.ipynb
index c52d9ee..78f1235 100644
--- a/notebooks/car_negotiation.ipynb
+++ b/notebooks/car_negotiation.ipynb
@@ -12,6 +12,18 @@
     "Note that you need to have the LLM API keys [stored in an `.env` file](https://github.com/theskumar/python-dotenv#getting-started) (recommended), or as environmetn variables."
    ]
   },
+  {
+    "cell_type": "code",
+    "source": [
+      "!pip install python-dotenv langchain interlab"
+    ],
+    "metadata": {
+      "id": "mXY_cQyUJfXL"
+    },
+    "id": "mXY_cQyUJfXL",
+    "execution_count": null,
+    "outputs": []
+  },
   {
    "cell_type": "code",
    "execution_count": null,