diff --git a/09_tabular.ipynb b/09_tabular.ipynb
index 2591a55..2b965b2 100644
--- a/09_tabular.ipynb
+++ b/09_tabular.ipynb
@@ -7664,7 +7664,7 @@
    "outputs": [],
    "source": [
     "#hide\n",
-    "# pip install —pre -f https://sklearn-nightly.scdn8.secure.raxcdn.com scikit-learn —U"
+    "# pip install --pre -f https://sklearn-nightly.scdn8.secure.raxcdn.com scikit-learn --upgrade"
    ]
   },
   {