diff --git a/docs/ibis-for-pandas-users.ipynb b/docs/ibis-for-pandas-users.ipynb
index 849232feb286..5056b644678a 100644
--- a/docs/ibis-for-pandas-users.ipynb
+++ b/docs/ibis-for-pandas-users.ipynb
@@ -1712,29 +1712,6 @@
     "reverse sort then use the `head` method to retrieve the \"top\" rows."
    ]
   },
-  {
-   "cell_type": "code",
-   "execution_count": 30,
-   "id": "684563af-1db7-464c-9d65-ddeb5e7cc854",
-   "metadata": {},
-   "outputs": [
-    {
-     "ename": "AttributeError",
-     "evalue": "tail",
-     "output_type": "error",
-     "traceback": [
-      "\u001b[0;31m---------------------------------------------------------------------------\u001b[0m",
-      "\u001b[0;31mAttributeError\u001b[0m                            Traceback (most recent call last)",
-      "\u001b[0;32m/tmp/ipykernel_281650/1485850447.py\u001b[0m in \u001b[0;36m<module>\u001b[0;34m\u001b[0m\n\u001b[0;32m----> 1\u001b[0;31m \u001b[0mt\u001b[0m\u001b[0;34m.\u001b[0m\u001b[0mtail\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0;36m1\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m",
-      "\u001b[0;32m~/.pyenv/versions/3.9.4/lib/python3.9/site-packages/ibis/expr/types/relations.py\u001b[0m in \u001b[0;36m__getattr__\u001b[0;34m(self, key)\u001b[0m\n\u001b[1;32m    162\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    163\u001b[0m         \u001b[0;32mif\u001b[0m \u001b[0mkey\u001b[0m \u001b[0;32mnot\u001b[0m \u001b[0;32min\u001b[0m \u001b[0mschema\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0;32m--> 164\u001b[0;31m             \u001b[0;32mraise\u001b[0m \u001b[0mAttributeError\u001b[0m\u001b[0;34m(\u001b[0m\u001b[0mkey\u001b[0m\u001b[0;34m)\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n\u001b[0m\u001b[1;32m    165\u001b[0m \u001b[0;34m\u001b[0m\u001b[0m\n\u001b[1;32m    166\u001b[0m         \u001b[0;32mtry\u001b[0m\u001b[0;34m:\u001b[0m\u001b[0;34m\u001b[0m\u001b[0;34m\u001b[0m\u001b[0m\n",
-      "\u001b[0;31mAttributeError\u001b[0m: tail"
-     ]
-    }
-   ],
-   "source": [
-    "t.tail(1)"
-   ]
-  },
   {
    "cell_type": "markdown",
    "id": "757db52c-f8cd-47cc-ab67-fa4a68998827",
diff --git a/docs/ibis-for-sql-programmers.ipynb b/docs/ibis-for-sql-programmers.ipynb
index a2ad312f7d68..78e09a18da89 100644
--- a/docs/ibis-for-sql-programmers.ipynb
+++ b/docs/ibis-for-sql-programmers.ipynb
@@ -2672,45 +2672,6 @@
     "print(ibis.impala.compile(expr))"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "id": "be493bd7-50ed-459c-8d78-6469cd7c053e",
-   "metadata": {},
-   "source": [
-    "You can also use `expr` as a filter:"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": 77,
-   "id": "97759073-5bef-49e2-9d5e-e97214ed9c27",
-   "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "SELECT t0.*\n",
-      "FROM table1 t0\n",
-      "  LEFT SEMI JOIN (\n",
-      "    SELECT *\n",
-      "    FROM (\n",
-      "      SELECT `key1`, count(`key1`) AS `count`\n",
-      "      FROM table1\n",
-      "      GROUP BY 1\n",
-      "    ) t2\n",
-      "    ORDER BY `count` DESC\n",
-      "    LIMIT 10\n",
-      "  ) t1\n",
-      "    ON t0.`key1` = t1.`key1`\n"
-     ]
-    }
-   ],
-   "source": [
-    "expr2 = t1[expr]\n",
-    "print(ibis.impala.compile(expr2))"
-   ]
-  },
   {
    "cell_type": "markdown",
    "id": "ed819953-17fd-41da-8076-cd4134732aae",
diff --git a/flake.nix b/flake.nix
index 6468dd0fbe1a..dc4b567c32d7 100644
--- a/flake.nix
+++ b/flake.nix
@@ -107,6 +107,8 @@
           nodejs
           # poetry executable
           env.pkgs.poetry
+          # used in notebooks to download data
+          curl
         ])
         ++ preCommitDeps
         ++ backendDevDeps;
diff --git a/mkdocs.yml b/mkdocs.yml
index 4903ee0a7c54..e42f52610a01 100644
--- a/mkdocs.yml
+++ b/mkdocs.yml
@@ -87,6 +87,7 @@ plugins:
       execute_ignore: "tutorial/*Geospatial*.ipynb"
       include_source: true
       theme: dark
+      allow_errors: false
   - literate-nav
 markdown_extensions:
   - admonition