diff --git a/notebooks/wp5/satellite_sea_ice_conc_climate_change.ipynb b/notebooks/wp5/satellite_sea_ice_conc_climate_change.ipynb
index 4c464cf..c1a0940 100644
--- a/notebooks/wp5/satellite_sea_ice_conc_climate_change.ipynb
+++ b/notebooks/wp5/satellite_sea_ice_conc_climate_change.ipynb
@@ -298,7 +298,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "for region, da_region in ds[\"extent\"].groupby(\"region\"):\n",
+    "for region, da_region in ds[\"extent\"].groupby(\"region\", squeeze=False):\n",
     "    for reduction in (\"min\", \"max\"):\n",
     "        da = compute_yearly_extremes(da_region, reduction)\n",
     "        da.plot(hue=\"product\", marker=\"^\")\n",
@@ -321,8 +321,8 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "for product, ds_product in ds.drop(\"rms_error\").groupby(\"product\"):\n",
-    "    for region, ds_region in ds_product.groupby(\"region\"):\n",
+    "for product, ds_product in ds.drop(\"rms_error\").groupby(\"product\", squeeze=False):\n",
+    "    for region, ds_region in ds_product.groupby(\"region\", squeeze=False):\n",
     "        facet = plot_against_dayofyear(ds_region)\n",
     "        facet.fig.suptitle(f\"{product=} {region=}\", y=1.01)\n",
     "        plt.show()"