diff --git a/docs/docs/how-tos/persistence_postgres.ipynb b/docs/docs/how-tos/persistence_postgres.ipynb
index ab6b6e51a..572759289 100644
--- a/docs/docs/how-tos/persistence_postgres.ipynb
+++ b/docs/docs/how-tos/persistence_postgres.ipynb
@@ -42,7 +42,10 @@
     "checkpointer = # postgres checkpointer (see examples below)\n",
     "graph = builder.compile(checkpointer=checkpointer)\n",
     "...\n",
-    "```"
+    "```\n",
+    "\n",
+    "!!! info \"Setup\n",
+    "    You need to run `.setup()` once on your checkpointer to initialize the database before you can use it."
    ]
   },
   {