diff --git a/notebooks/ImvizExample.ipynb b/notebooks/ImvizExample.ipynb
index 1841efb1bd..33d02c273a 100644
--- a/notebooks/ImvizExample.ipynb
+++ b/notebooks/ImvizExample.ipynb
@@ -144,9 +144,7 @@
    "cell_type": "code",
    "execution_count": null,
    "id": "229d64f3-843f-4a7f-ac98-989f2a95d4c1",
-   "metadata": {
-    "scrolled": false
-   },
+   "metadata": {},
    "outputs": [],
    "source": [
     "imviz.show()"
@@ -386,21 +384,7 @@
     "my_reg = CirclePixelRegion(center=PixCoord(x=1526, y=1063), radius=40)\n",
     "my_reg_sky = CircleSkyRegion(c, Angle(2, u.arcsec))\n",
     "\n",
-    "# Numpy mask\n",
-    "idx = (np.array([350, 350, 350, 350, 350, 350, 351, 351, 351, 351, 352, 352, 352,\n",
-    "                 352, 352, 352, 352, 352, 352, 352, 353, 353, 353, 353, 353, 353,\n",
-    "                 353, 353, 353, 353, 353, 353, 354, 354, 354, 354, 354, 354, 354,\n",
-    "                 354, 355, 355, 355, 355, 355, 355, 355, 355, 356, 356, 356, 356,\n",
-    "                 356, 356, 356, 357, 357, 358, 358]),\n",
-    "       np.array([353, 354, 355, 356, 357, 358, 350, 352, 359, 361, 350, 352, 353,\n",
-    "                 354, 355, 356, 357, 358, 359, 361, 350, 351, 352, 353, 354, 355,\n",
-    "                 356, 357, 358, 359, 360, 361, 351, 352, 354, 355, 356, 357, 359,\n",
-    "                 360, 352, 353, 354, 355, 356, 357, 358, 359, 352, 353, 354, 355,\n",
-    "                 356, 357, 358, 353, 358, 352, 359]))\n",
-    "my_mask = np.zeros(data.data.shape, dtype=np.bool_)\n",
-    "my_mask[idx] = True\n",
-    "\n",
-    "my_regions = [my_aper, my_aper_sky, my_reg, my_reg_sky, my_mask]\n",
+    "my_regions = [my_aper, my_aper_sky, my_reg, my_reg_sky]\n",
     "imviz.load_regions(my_regions)"
    ]
   },
@@ -728,7 +712,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.10.10"
+   "version": "3.11.0"
   }
  },
  "nbformat": 4,