diff --git a/docs/docs/tutorials/get-started/3-add-memory.md b/docs/docs/tutorials/get-started/3-add-memory.md
index 854132f2c..acd21c39d 100644
--- a/docs/docs/tutorials/get-started/3-add-memory.md
+++ b/docs/docs/tutorials/get-started/3-add-memory.md
@@ -164,7 +164,7 @@ llm = init_chat_model("anthropic:claude-3-5-sonnet-latest")
 ```
 -->
 
-```python
+```python hl_lines="36 37"
 from typing import Annotated
 
 from langchain.chat_models import init_chat_model
@@ -206,4 +206,4 @@ graph = graph_builder.compile(checkpointer=memory)
 
 ## Next steps
 
-In the next tutorial, you will [add human-in-the-loop to the chatbot](./4-human-in-the-loop.md) to handle situations where it may need guidance or verification before proceeding.
\ No newline at end of file
+In the next tutorial, you will [add human-in-the-loop to the chatbot](./4-human-in-the-loop.md) to handle situations where it may need guidance or verification before proceeding.