diff --git a/notebooks/3-hpc-allocation.ipynb b/notebooks/3-hpc-allocation.ipynb
index a32f656a..f0d2c604 100644
--- a/notebooks/3-hpc-allocation.ipynb
+++ b/notebooks/3-hpc-allocation.ipynb
@@ -163,10 +163,14 @@
    ],
    "source": [
     "with Executor(\n",
-    "    backend=\"flux_allocation\", flux_executor_pmi_mode=\"pmix\", max_workers=2, init_function=init_function, block_allocation=True\n",
+    "    backend=\"flux_allocation\",\n",
+    "    flux_executor_pmi_mode=\"pmix\",\n",
+    "    max_workers=2,\n",
+    "    init_function=init_function,\n",
+    "    block_allocation=True,\n",
     ") as exe:\n",
     "    fs = exe.submit(calc_with_preload, 2, j=5)\n",
-    "    print(fs.result())\n"
+    "    print(fs.result())"
    ]
   },
   {
@@ -245,7 +249,9 @@
     }
    ],
    "source": [
-    "with Executor(backend=\"flux_allocation\", flux_executor_pmi_mode=\"pmix\", cache_directory=\"./cache\") as exe:\n",
+    "with Executor(\n",
+    "    backend=\"flux_allocation\", flux_executor_pmi_mode=\"pmix\", cache_directory=\"./cache\"\n",
+    ") as exe:\n",
     "    future_lst = [exe.submit(sum, [i, i]) for i in range(1, 4)]\n",
     "    print([f.result() for f in future_lst])"
    ]
@@ -295,7 +301,7 @@
    "source": [
     "def calc_nested():\n",
     "    from executorlib import Executor\n",
-    "    \n",
+    "\n",
     "    with Executor(backend=\"flux_allocation\", flux_executor_pmi_mode=\"pmix\") as exe:\n",
     "        fs = exe.submit(sum, [1, 1])\n",
     "        return fs.result()"