diff --git a/index.ipynb b/index.ipynb
index a385453d1..e94fe89f1 100644
--- a/index.ipynb
+++ b/index.ipynb
@@ -13,49 +13,49 @@
   },
   {
    "source": [
-    "## [Comparing Hohmann and bielliptic transfers](docs/source/examples/Comparing%20Hohmann%20and%20bielliptic%20transfers.md)\n",
+    "## [Comparing Hohmann and bielliptic transfers](docs/source/examples/Comparing%20Hohmann%20and%20bielliptic%20transfers.mystnb)\n",
     "\n",
-    "[![hohmann_bielliptic](docs/source/examples/hohmann_bielliptic.png)](docs/source/examples/Comparing%20Hohmann%20and%20bielliptic%20transfers.md)\n",
+    "[![hohmann_bielliptic](docs/source/examples/hohmann_bielliptic.png)](docs/source/examples/Comparing%20Hohmann%20and%20bielliptic%20transfers.mystnb)\n",
     "\n",
-    "## [Exploring the New Horizons launch](docs/source/examples/Exploring%20the%20New%20Horizons%20launch.md)\n",
+    "## [Exploring the New Horizons launch](docs/source/examples/Exploring%20the%20New%20Horizons%20launch.mystnb)\n",
     "\n",
-    "[![new_horizons](docs/source/examples/new_horizons.png)](docs/source/examples/Exploring%20the%20New%20Horizons%20launch.md)\n",
+    "[![new_horizons](docs/source/examples/new_horizons.png)](docs/source/examples/Exploring%20the%20New%20Horizons%20launch.mystnb)\n",
     "\n",
-    "## [Going to Jupiter with Python using Jupyter and poliastro](docs/source/examples/Going%20to%20Jupiter%20with%20Python%20using%20Jupyter%20and%20poliastro.md)\n",
+    "## [Going to Jupiter with Python using Jupyter and poliastro](docs/source/examples/Going%20to%20Jupiter%20with%20Python%20using%20Jupyter%20and%20poliastro.mystnb)\n",
     "\n",
-    "[![mars](docs/source/examples/jupiter.png)](docs/source/examples/Going%20to%20Jupiter%20with%20Python%20using%20Jupyter%20and%20poliastro.md)\n",
+    "[![mars](docs/source/examples/jupiter.png)](docs/source/examples/Going%20to%20Jupiter%20with%20Python%20using%20Jupyter%20and%20poliastro.mystnb)\n",
     "\n",
-    "## [Going to Mars with Python using poliastro](docs/source/examples/Going%20to%20Mars%20with%20Python%20using%20poliastro.md)\n",
+    "## [Going to Mars with Python using poliastro](docs/source/examples/Going%20to%20Mars%20with%20Python%20using%20poliastro.mystnb)\n",
     "\n",
-    "[![mars](docs/source/examples/trans_30_260.png)](docs/source/examples/Going%20to%20Mars%20with%20Python%20using%20poliastro.md)\n",
+    "[![mars](docs/source/examples/trans_30_260.png)](docs/source/examples/Going%20to%20Mars%20with%20Python%20using%20poliastro.mystnb)\n",
     "\n",
-    "## [Propagation using Cowell's formulation](docs/source/examples/Propagation%20using%20Cowell's%20formulation.md)\n",
+    "## [Propagation using Cowell's formulation](docs/source/examples/Propagation%20using%20Cowell's%20formulation.mystnb)\n",
     "\n",
-    "[![cowell](docs/source/examples/cowell.png)](docs/source/examples/Propagation%20using%20Cowells%20formulation.md)\n",
+    "[![cowell](docs/source/examples/cowell.png)](docs/source/examples/Propagation%20using%20Cowells%20formulation.mystnb)\n",
     "\n",
-    "## [Revisiting Lambert's problem in Python](docs/source/examples/Revisiting%20Lambert's%20problem%20in%20Python.md)\n",
+    "## [Revisiting Lambert's problem in Python](docs/source/examples/Revisiting%20Lambert's%20problem%20in%20Python.mystnb)\n",
     "\n",
-    "[![cowell](docs/source/examples/lambert.png)](docs/source/examples/Revisiting%20Lamberts%20problem%20in%20Python.md)\n",
+    "[![cowell](docs/source/examples/lambert.png)](docs/source/examples/Revisiting%20Lamberts%20problem%20in%20Python.mystnb)\n",
     "\n",
-    "## [Studying Hohmann transfers](docs/source/examples/Studying%20Hohmann%20transfers.md)\n",
+    "## [Studying Hohmann transfers](docs/source/examples/Studying%20Hohmann%20transfers.mystnb)\n",
     "\n",
-    "[![hohmann](docs/source/examples/hohmann.png)](docs/source/examples/Studying%20Hohmann%20transfers.md)\n",
+    "[![hohmann](docs/source/examples/hohmann.png)](docs/source/examples/Studying%20Hohmann%20transfers.mystnb)\n",
     "\n",
-    "## [Catch that asteroid!](docs/source/examples/Catch%20that%20asteroid!.md)\n",
+    "## [Catch that asteroid!](docs/source/examples/Catch%20that%20asteroid!.mystnb)\n",
     "\n",
-    "[![Florence](docs/source/examples/Florence.png)](docs/source/examples/Catch%20that%20asteroid!.md)\n",
+    "[![Florence](docs/source/examples/Florence.png)](docs/source/examples/Catch%20that%20asteroid!.mystnb)\n",
     "\n",
-    "## [Using NEOS package](docs/source/examples/Using%20NEOS%20package.md)\n",
+    "## [Using NEOS package](docs/source/examples/Using%20NEOS%20package.mystnb)\n",
     "\n",
-    "[![NEOS](docs/source/examples/NEOS.png)](docs/source/examples/Using%20NEOS%20package.md)\n",
+    "[![NEOS](docs/source/examples/NEOS.png)](docs/source/examples/Using%20NEOS%20package.mystnb)\n",
     "\n",
-    "## [Plotting in 3D](docs/source/examples/Plotting%20in%203D.md)\n",
+    "## [Plotting in 3D](docs/source/examples/Plotting%20in%203D.mystnb)\n",
     "\n",
-    "[![3DPlot](docs/source/examples/3DPlot.png)](docs/source/examples/Plotting%20in%203D.md)\n",
+    "[![3DPlot](docs/source/examples/3DPlot.png)](docs/source/examples/Plotting%20in%203D.mystnb)\n",
     "\n",
-    "## [Visualizing the SpaceX Tesla Roadster trip to Mars](docs/source/examples/Visualizing%20the%20SpaceX%20Tesla%20Roadster%20trip%20to%20Mars.md)\n",
+    "## [Visualizing the SpaceX Tesla Roadster trip to Mars](docs/source/examples/Visualizing%20the%20SpaceX%20Tesla%20Roadster%20trip%20to%20Mars.mystnb)\n",
     "\n",
-    "[![3DPlot](docs/source/examples/Tesla.png)](docs/source/examples/Visualizing%20the%20SpaceX%20Tesla%20Roadster%20trip%20to%20Mars.md)"
+    "[![3DPlot](docs/source/examples/Tesla.png)](docs/source/examples/Visualizing%20the%20SpaceX%20Tesla%20Roadster%20trip%20to%20Mars.mystnb)"
    ],
    "cell_type": "markdown",
    "metadata": {}