diff --git a/docs/docs/how-tos/many-tools.ipynb b/docs/docs/how-tos/many-tools.ipynb
index 9e61b5ed4..29ab75807 100644
--- a/docs/docs/how-tos/many-tools.ipynb
+++ b/docs/docs/how-tos/many-tools.ipynb
@@ -465,7 +465,9 @@
     "\n",
     "graph_builder = StateGraph(State)\n",
     "graph_builder.add_node(\"agent\", agent)\n",
-    "graph_builder.add_node(\"select_tools\", select_tools, retry_policy=RetryPolicy(max_attempts=3))\n",
+    "graph_builder.add_node(\n",
+    "    \"select_tools\", select_tools, retry_policy=RetryPolicy(max_attempts=3)\n",
+    ")\n",
     "\n",
     "tool_node = ToolNode(tools=tools)\n",
     "graph_builder.add_node(\"tools\", tool_node)\n",