diff --git a/book/features/live_code.ipynb b/book/features/live_code.ipynb
index a923219..8406c69 100644
--- a/book/features/live_code.ipynb
+++ b/book/features/live_code.ipynb
@@ -55,7 +55,7 @@
     "\n",
     "Afterwards, this sphinx extension needs to be enabled in your book. This can be done by adding the following lines to `_config.yml`:\n",
     "\n",
-    "```\n",
+    "```yaml\n",
     "launch_buttons:\n",
     "  thebe: true\n",
     "\n",
@@ -78,7 +78,7 @@
     "\n",
     "Note, if you're messing around with `html_theme_options` (for example when adding more buttons), all button behaviour is affected. In that case, as opposed to the jupyter book documentation, all buttons have to be specified from within `sphinx: html_theme_options` where you might also specify other buttons as well (ie. the [code repository button](https://jupyterbook.org/en/stable/basics/repository.html)).\n",
     "\n",
-    "```\n",
+    "```yaml\n",
     "sphinx:\n",
     "  config:\n",
     "    html_js_files:\n",