diff --git a/python/gtsam/examples/DiscreteBayesTree.ipynb b/python/gtsam/examples/DiscreteBayesTree.ipynb
index f980a22c0..90fbac747 100644
--- a/python/gtsam/examples/DiscreteBayesTree.ipynb
+++ b/python/gtsam/examples/DiscreteBayesTree.ipynb
@@ -43,8 +43,7 @@
    },
    "outputs": [],
    "source": [
-    "# This needs gtbook:\n",
-    "% pip install --quiet gtbook"
+    "%pip install --quiet gtsam-develop"
    ]
   },
   {