diff --git a/pelicanconf.py b/pelicanconf.py
index dec1bb1..fda2c40 100644
--- a/pelicanconf.py
+++ b/pelicanconf.py
@@ -38,3 +38,13 @@ JINJA_ENVIRONMENT = {
 }
 
 STATIC_PATHS = ["images", "robots.txt", "favicon.ico"]
+
+MARKDOWN = {
+    "extension_configs": {
+        "markdown.extensions.codehilite": {"css_class": "highlight"},
+        "markdown.extensions.extra": {},
+        "markdown.extensions.meta": {},
+        "markdown.extensions.toc": {},
+    },
+    "output_format": "html5",
+}