diff --git a/index.js b/index.js
index da0cae0..35069f2 100644
--- a/index.js
+++ b/index.js
@@ -64,6 +64,7 @@ module.exports = {
                 "ignoreAtRules": [ "if", "else", "elseif" ]
             }
         ],
+        "font-weight-notation": "numeric",
         "string-quotes": "single",
         "value-keyword-case": "lower",
         "declaration-empty-line-before": "never",