diff --git a/notebooks/tem_tutorial.ipynb b/notebooks/tem_tutorial.ipynb
index 0f1cd0e6..c1c34978 100644
--- a/notebooks/tem_tutorial.ipynb
+++ b/notebooks/tem_tutorial.ipynb
@@ -188,6 +188,19 @@
     "sim_config = \"simSPI/sim_config.yaml\""
    ]
   },
+  {
+   "cell_type": "markdown",
+   "id": "48db9352",
+   "metadata": {},
+   "source": [
+    "Note that `path_config.yaml` contains the fields\n",
+    "```bash\n",
+    "output_dir: './simSPI/temp_workspace/output/'\n",
+    "local_sim_dir: '/Users/gw/software/TEM-simulator_1.3/src/TEM-simulator'\n",
+    "```\n",
+    "These paths must exist, so create them or change them to where you want the output files to go and where the local install of the TEM-simulator lives."
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "bc231b9e",
@@ -502,7 +515,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.12"
+   "version": "3.9.10"
   }
  },
  "nbformat": 4,