diff --git a/docs/notebooks/4_ensembles.ipynb b/docs/notebooks/4_ensembles.ipynb
index 97b444dd..75d28732 100644
--- a/docs/notebooks/4_ensembles.ipynb
+++ b/docs/notebooks/4_ensembles.ipynb
@@ -54,9 +54,9 @@
     "}\n",
     "\n",
     "for d in datasets:\n",
-    "    file = nimbus(repo=\"https://github.com/Ouranosinc/xclim-testdata\").fetch(\n",
-    "        datasets[d]\n",
-    "    )\n",
+    "    file = nimbus(\n",
+    "        repo=\"https://raw.githubusercontent.com/Ouranosinc/xclim-testdata\"\n",
+    "    ).fetch(datasets[d])\n",
     "    ds = xr.open_dataset(file).isel(lon=slice(0, 4), lat=slice(0, 4))\n",
     "    ds = xs.climatological_op(\n",
     "        ds,\n",