diff --git a/site/files/solutions-NO-PEEKING.ipynb b/site/files/solutions-NO-PEEKING.ipynb
index 6df949f..2accde8 100644
--- a/site/files/solutions-NO-PEEKING.ipynb
+++ b/site/files/solutions-NO-PEEKING.ipynb
@@ -30,7 +30,7 @@
    "outputs": [],
    "source": [
     "import piplite\n",
-    "await piplite.install(\"awkward==2.7.2\")\n",
+    "await piplite.install(\"awkward==2.8.5\")\n",
     "await piplite.install(\"hist\")\n",
     "await piplite.install(\"uproot\")\n",
     "await piplite.install(\"vector\")"
@@ -566,7 +566,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "with uproot.open(\"data/SMHiggsToZZTo4L.root\", handler=uproot.MemmapSource) as file:\n",
+    "with uproot.open(\"data/SMHiggsToZZTo4L.root\") as file:\n",
     "    dataset = file[\"Events\"].arrays()"
    ]
   },
@@ -1656,13 +1656,13 @@
        "100\n",
        "</text>\n",
        "<text text-anchor=\"middle\" x=\"125.0\" y=\"15\" style=\"fill:currentColor;\">\n",
-       "mass GeV\n",
+       "mass (GeV)\n",
        "</text>\n",
        "<polyline points=\"  0,0   0,-12 2.5,-12 2.5,-14.9   5,-14.9   5,-18.7 7.5,-18.7 7.5,-22.8  10,-22.8  10,-27.7 12.5,-27.7 12.5,-37.3  15,-37.3  15,-40.1 17.5,-40.1 17.5,-38.6  20,-38.6  20,-38.4 22.5,-38.4 22.5,-39.8  25,-39.8  25,-40.9 27.5,-40.9 27.5,-42.1  30,-42.1  30,-42.2 32.5,-42.2 32.5,-43.8  35,-43.8  35,-45 37.5,-45 37.5,-44.9  40,-44.9  40,-47.7 42.5,-47.7 42.5,-48.9  45,-48.9  45,-51.4 47.5,-51.4 47.5,-53.1  50,-53.1  50,-55 52.5,-55 52.5,-56.6  55,-56.6  55,-59.8 57.5,-59.8 57.5,-58.6  60,-58.6  60,-61 62.5,-61 62.5,-63.2  65,-63.2  65,-62 67.5,-62 67.5,-63.4  70,-63.4  70,-61.9 72.5,-61.9 72.5,-62.2  75,-62.2  75,-60.7 77.5,-60.7 77.5,-56.1  80,-56.1  80,-50.5 82.5,-50.5 82.5,-45  85,-45  85,-38.4 87.5,-38.4 87.5,-34.8  90,-34.8  90,-32 92.5,-32 92.5,-31.2  95,-31.2  95,-29.3 97.5,-29.3 97.5,-28.3 100,-28.3 100,-28.6 102.5,-28.6 102.5,-27.1 105,-27.1 105,-25.3 107.5,-25.3 107.5,-25.4 110,-25.4 110,-25.9 112.5,-25.9 112.5,-24.6 115,-24.6 115,-23.2 117.5,-23.2 117.5,-23.9 120,-23.9 120,-21.9 122.5,-21.9 122.5,-21.5 125,-21.5 125,-20.7 127.5,-20.7 127.5,-20.8 130,-20.8 130,-19.6 132.5,-19.6 132.5,-18.7 135,-18.7 135,-19 137.5,-19 137.5,-18.6 140,-18.6 140,-18.1 142.5,-18.1 142.5,-16.3 145,-16.3 145,-15.7 147.5,-15.7 147.5,-15 150,-15 150,-15.6 152.5,-15.6 152.5,-14.5 155,-14.5 155,-14.3 157.5,-14.3 157.5,-13.5 160,-13.5 160,-13.4 162.5,-13.4 162.5,-12.1 165,-12.1 165,-12.4 167.5,-12.4 167.5,-11.7 170,-11.7 170,-11.8 172.5,-11.8 172.5,-11 175,-11 175,-11 177.5,-11 177.5,-11.1 180,-11.1 180,-10.5 182.5,-10.5 182.5,-10.9 185,-10.9 185,-9.91 187.5,-9.91 187.5,-10.3 190,-10.3 190,-11.2 192.5,-11.2 192.5,-11.3 195,-11.3 195,-11.9 197.5,-11.9 197.5,-12 200,-12 200,-12.3 202.5,-12.3 202.5,-13.3 205,-13.3 205,-15 207.5,-15 207.5,-16.5 210,-16.5 210,-20.2 212.5,-20.2 212.5,-23.3 215,-23.3 215,-30.9 217.5,-30.9 217.5,-39.8 220,-39.8 220,-58 222.5,-58 222.5,-81 225,-81 225,-100 227.5,-100 227.5,-94.8 230,-94.8 230,-66 232.5,-66 232.5,-36.3 235,-36.3 235,-19.6 237.5,-19.6 237.5,-10.9 240,-10.9 240,-6.22 242.5,-6.22 242.5,-3.83 245,-3.83 245,-2.41 247.5,-2.41 247.5,-1.71 250,-1.71 250,0\" style=\"fill:none; stroke:currentColor;\"/>\n",
        "</svg>\n",
        "</div>\n",
        "<div style=\"flex=grow:1;\">\n",
-       "Regular(100, 0, 100, label='mass GeV')<br/>\n",
+       "Regular(100, 0, 100, label='mass (GeV)')<br/>\n",
        "<hr style=\"margin-top:.2em; margin-bottom:.2em;\"/>\n",
        "Double() Σ=271500.0 <em>(272832.0 with flow)</em>\n",
        "\n",
@@ -1671,7 +1671,7 @@
        "</html>"
       ],
       "text/plain": [
-       "Hist(Regular(100, 0, 100, label='mass GeV'), storage=Double()) # Sum: 271500.0 (272832.0 with flow)"
+       "Hist(Regular(100, 0, 100, label='mass (GeV)'), storage=Double()) # Sum: 271500.0 (272832.0 with flow)"
       ]
      },
      "execution_count": 40,
@@ -1682,7 +1682,7 @@
    "source": [
     "mu1, mu2 = ak.unzip(ak.cartesian([muon_plus, muon_minus]))\n",
     "\n",
-    "quickplot(100, 0, 100, ak.flatten((mu1 + mu2).mass), label=\"mass GeV\")"
+    "quickplot(100, 0, 100, ak.flatten((mu1 + mu2).mass), label=\"mass (GeV)\")"
    ]
   },
   {
diff --git a/site/files/tutorial.ipynb b/site/files/tutorial.ipynb
index 562a76a..a675508 100644
--- a/site/files/tutorial.ipynb
+++ b/site/files/tutorial.ipynb
@@ -73,7 +73,7 @@
    "outputs": [],
    "source": [
     "import piplite\n",
-    "await piplite.install(\"awkward==2.7.4\")\n",
+    "await piplite.install(\"awkward==2.8.5\")\n",
     "await piplite.install(\"hist\")\n",
     "await piplite.install(\"uproot\")\n",
     "await piplite.install(\"vector\")"
@@ -365,32 +365,31 @@
     "\n",
     "    for i in range(len(x)):\n",
     "        for j in range(i + 1, len(x)):\n",
-    "            if i != j:\n",
-    "                mi, mj = m[i], m[j]\n",
-    "                xi, xj = x[i], x[j]\n",
-    "                pi, pj = p[i], p[j]\n",
-    "                displacement = [\n",
-    "                    xj[0] - xi[0],\n",
-    "                    xj[1] - xi[1],\n",
-    "                    xj[2] - xi[2],\n",
-    "                ]\n",
-    "                distance = np.sqrt(displacement[0]**2 + displacement[1]**2 + displacement[2]**2)\n",
-    "                direction = [\n",
-    "                    displacement[0] / distance,\n",
-    "                    displacement[1] / distance,\n",
-    "                    displacement[2] / distance,\n",
-    "                ]\n",
-    "                force = [\n",
-    "                    G * mi * mj * direction[0] / distance**2,\n",
-    "                    G * mi * mj * direction[1] / distance**2,\n",
-    "                    G * mi * mj * direction[2] / distance**2,\n",
-    "                ]\n",
-    "                total_force[i, 0] += force[0]\n",
-    "                total_force[i, 1] += force[1]\n",
-    "                total_force[i, 2] += force[2]\n",
-    "                total_force[j, 0] += -force[0]\n",
-    "                total_force[j, 1] += -force[1]\n",
-    "                total_force[j, 2] += -force[2]\n",
+    "            mi, mj = m[i], m[j]\n",
+    "            xi, xj = x[i], x[j]\n",
+    "            pi, pj = p[i], p[j]\n",
+    "            displacement = [\n",
+    "                xj[0] - xi[0],\n",
+    "                xj[1] - xi[1],\n",
+    "                xj[2] - xi[2],\n",
+    "            ]\n",
+    "            distance = np.sqrt(displacement[0]**2 + displacement[1]**2 + displacement[2]**2)\n",
+    "            direction = [\n",
+    "                displacement[0] / distance,\n",
+    "                displacement[1] / distance,\n",
+    "                displacement[2] / distance,\n",
+    "            ]\n",
+    "            force = [\n",
+    "                G * mi * mj * direction[0] / distance**2,\n",
+    "                G * mi * mj * direction[1] / distance**2,\n",
+    "                G * mi * mj * direction[2] / distance**2,\n",
+    "            ]\n",
+    "            total_force[i, 0] += force[0]\n",
+    "            total_force[i, 1] += force[1]\n",
+    "            total_force[i, 2] += force[2]\n",
+    "            total_force[j, 0] += -force[0]\n",
+    "            total_force[j, 1] += -force[1]\n",
+    "            total_force[j, 2] += -force[2]\n",
     "\n",
     "    return total_force"
    ]
@@ -881,7 +880,7 @@
    "id": "fe1c0e4e-e1e4-4f4e-bbb2-fc8c96648cf8",
    "metadata": {},
    "source": [
-    "Write a slice the selects these elements:\n",
+    "Write a slice that selects these elements:\n",
     "\n",
     "<img src=\"img/array3d-highlight2.svg\" width=\"25%\">"
    ]
@@ -1216,7 +1215,7 @@
     "with open(\"data/SMHiggsToZZTo4L.root\", \"rb\") as file:\n",
     "    file.seek(42104123)\n",
     "    compressed_data = file.read(14718)\n",
-    "    uncompressed_data = uncompressed_data = zlib.decompress(compressed_data)\n",
+    "    uncompressed_data = zlib.decompress(compressed_data)\n",
     "    array_of_uint8 = np.frombuffer(uncompressed_data, np.uint8, 12524)"
    ]
   },
@@ -2358,7 +2357,7 @@
    "source": [
     "cut = mu1.charge != mu2.charge\n",
     "\n",
-    "quickplot(100, 0, 100, ak.flatten((mu1[cut] + mu2[cut]).mass), label=\"mass GeV\")"
+    "quickplot(100, 0, 100, ak.flatten((mu1[cut] + mu2[cut]).mass), label=\"mass (GeV)\")"
    ]
   },
   {
diff --git a/site/requirements.txt b/site/requirements.txt
index 690b957..b5c5fb6 100644
--- a/site/requirements.txt
+++ b/site/requirements.txt
@@ -1,4 +1,4 @@
-jupyterlite-core==0.8.0
+jupyterlite-core==0.7.5
 jupyterlab==4.6.1
 notebook==7.6.0
-jupyterlite-pyodide-kernel==0.8.1
+jupyterlite-pyodide-kernel==0.7.2