diff --git a/docs/Newton-Raphson.ipynb b/docs/Newton-Raphson.ipynb
index c0892b1..9c8a880 100644
--- a/docs/Newton-Raphson.ipynb
+++ b/docs/Newton-Raphson.ipynb
@@ -360,21 +360,14 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
-   "language": "python",
-   "name": "python2"
+   "display_name": "Joypy",
+   "language": "",
+   "name": "thun"
   },
   "language_info": {
-   "codemirror_mode": {
-    "name": "ipython",
-    "version": 3
-   },
-   "file_extension": ".py",
-   "mimetype": "text/x-python",
-   "name": "python",
-   "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython3",
-   "version": "3.8.3"
+   "file_extension": ".joy",
+   "mimetype": "text/plain",
+   "name": "Joy"
   }
  },
  "nbformat": 4,