diff --git a/notebook/diagonal.ipynb b/notebook/diagonal.ipynb
index 1277b63..a4b6a0e 100644
--- a/notebook/diagonal.ipynb
+++ b/notebook/diagonal.ipynb
@@ -6,7 +6,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "from jacobi import propagate, jacobi\n",
+    "from jacobi import jacobi\n",
     "import numpy as np\n",
     "from matplotlib import pyplot as plt\n",
     "import timeit"
@@ -39,7 +39,7 @@
     "            orig = jacobi._propagate._try_reduce_jacobian\n",
     "            jacobi._propagate._try_reduce_jacobian = lambda x: x\n",
     "\n",
-    "            timer = timeit.Timer(f\"propagate(fn, x, xcov, diagonal=False)\",\n",
+    "            timer = timeit.Timer(\"propagate(fn, x, xcov, diagonal=False)\",\n",
     "                                 globals=locals())\n",
     "            k, ti = timer.autorange()\n",
     "            t[key].append(ti / k)\n",
diff --git a/notebook/explore.ipynb b/notebook/explore.ipynb
index 23a17c0..c279e34 100644
--- a/notebook/explore.ipynb
+++ b/notebook/explore.ipynb
@@ -9,11 +9,8 @@
    "source": [
     "import numpy as np\n",
     "import matplotlib.pyplot as plt\n",
-    "from typing import Callable, Optional, Tuple\n",
     "import numdifftools as nd\n",
     "import sympy as sp\n",
-    "from iminuit import Minuit\n",
-    "from iminuit.cost import LeastSquares\n",
     "import tabulate"
    ]
   },
@@ -728,7 +725,7 @@
     "fp1, fp1e = derive(F(x), 0)\n",
     "\n",
     "pull = (fp1 - fp(x)) / fp1e\n",
-    "plt.hist(pull, bins=100, range=(-5,5));\n",
+    "plt.hist(pull, bins=100, range=(-5,5))\n",
     "plt.title(f\"{np.std(pull):.2f} {mad(pull):.2f}\");"
    ]
   },