diff --git a/notebooks/cfc-atm.ipynb b/notebooks/cfc-atm.ipynb
index 9fe40ab..bebea19 100644
--- a/notebooks/cfc-atm.ipynb
+++ b/notebooks/cfc-atm.ipynb
@@ -2881,6 +2881,15 @@
    "outputs": [],
    "source": []
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "client.close()"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {},