diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 77a96398..aec1f54c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -15,6 +15,6 @@ repos:
         exclude: docs/tutorials
 
   - repo: https://github.com/psf/black-pre-commit-mirror
-    rev: "25.12.0"
+    rev: "26.1.0"
     hooks:
       - id: black-jupyter
diff --git a/docs/tutorials/parallel.ipynb b/docs/tutorials/parallel.ipynb
index 60580a25..a2f7afb7 100644
--- a/docs/tutorials/parallel.ipynb
+++ b/docs/tutorials/parallel.ipynb
@@ -255,8 +255,7 @@
    ],
    "source": [
     "with open(\"script.py\", \"w\") as f:\n",
-    "    f.write(\n",
-    "        \"\"\"\n",
+    "    f.write(\"\"\"\n",
     "import sys\n",
     "import time\n",
     "import emcee\n",
@@ -285,8 +284,7 @@
     "    sampler.run_mcmc(initial, nsteps)\n",
     "    end = time.time()\n",
     "    print(end - start)\n",
-    "\"\"\"\n",
-    "    )\n",
+    "\"\"\")\n",
     "\n",
     "mpi_time = !mpiexec -n {ncpu} python script.py\n",
     "mpi_time = float(mpi_time[0])\n",