diff --git a/assets/main.scss b/assets/main.scss
index 49c0e5f..e343771 100644
--- a/assets/main.scss
+++ b/assets/main.scss
@@ -2,7 +2,9 @@
 #
 ---
 
-$base-font-family: "Liberation Serif", "Tinos", "Times New Roman", serif;
+$base-font-family: ui-serif, "Liberation Serif", Tinos, "Times New Roman", serif;
+$monospace-font-family: ui-monospace, "Liberation Mono", Cousine, "Courier New",
+  monospace;
 
 @import "{{ site.theme }}";