diff --git a/figures/2 T1 mapping/figure_2-2.ipynb b/figures/2 T1 mapping/figure_2-2.ipynb
index c8b56eb..30aca22 100644
--- a/figures/2 T1 mapping/figure_2-2.ipynb	
+++ b/figures/2 T1 mapping/figure_2-2.ipynb	
@@ -1,5 +1,22 @@
 {
  "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "---\n",
+    "jupytext:\n",
+    "  formats: md:myst\n",
+    "  text_representation:\n",
+    "    extension: .md\n",
+    "    format_name: myst\n",
+    "kernelspec:\n",
+    "  display_name: Python 3\n",
+    "  language: python\n",
+    "  name: python3\n",
+    "---"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,