diff --git a/notebooks/3-hpc-allocation.ipynb b/notebooks/3-hpc-allocation.ipynb
index 465447b8..1d4ef3cf 100644
--- a/notebooks/3-hpc-allocation.ipynb
+++ b/notebooks/3-hpc-allocation.ipynb
@@ -322,7 +322,9 @@
     }
    ],
    "source": [
-    "with Executor(backend=\"flux_allocation\", flux_executor_pmi_mode=\"pmix\", flux_executor_nesting=True) as exe:\n",
+    "with Executor(\n",
+    "    backend=\"flux_allocation\", flux_executor_pmi_mode=\"pmix\", flux_executor_nesting=True\n",
+    ") as exe:\n",
     "    fs = exe.submit(calc_nested)\n",
     "    print(fs.result())"
    ]