diff --git a/lib/beacon/template/markdown.ex b/lib/beacon/template/markdown.ex
index 4f6641223..b65e0947b 100644
--- a/lib/beacon/template/markdown.ex
+++ b/lib/beacon/template/markdown.ex
@@ -16,8 +16,7 @@ defmodule Beacon.Template.Markdown do
 
   """
   @spec convert_to_html(Beacon.Template.t(), Beacon.Template.LoadMetadata.t()) :: {:cont, Beacon.Template.t()} | {:halt, Exception.t()}
-  def convert_to_html(template, _metadata, opts \\ []) do
-    syntax_highlight_theme = Keyword.get(opts, :syntax_highlight_theme, "onedark")
+  def convert_to_html(template, _metadata, _opts \\ []) do
 
     template =
       MDEx.to_html!(template,
@@ -40,9 +39,8 @@ defmodule Beacon.Template.Markdown do
         render: [
           unsafe_: true
         ],
-        features: [
-          syntax_highlight_theme: syntax_highlight_theme
-        ]
+        syntax_highlight: [formatter: {:html_inline, theme: "onedark"}],
+        sanitize: MDEx.Document.default_sanitize_options()
       )
 
     {:cont, template}
diff --git a/mix.exs b/mix.exs
index 987cc99a2..0227e194f 100644
--- a/mix.exs
+++ b/mix.exs
@@ -59,7 +59,7 @@ defmodule Beacon.MixProject do
       # Overridable
       override_dep(:phoenix, "~> 1.7", "PHOENIX_VERSION", "PHOENIX_PATH"),
       override_dep(:phoenix_live_view, ">= 1.0.1", "PHOENIX_LIVE_VIEW_VERSION", "PHOENIX_LIVE_VIEW_PATH"),
-      override_dep(:mdex, "~> 0.2", "MDEX_VERSION", "MDEX_PATH"),
+      override_dep(:mdex, "~> 0.9", "MDEX_VERSION", "MDEX_PATH"),
 
       # Runtime
       {:accent, "~> 1.1"},