diff --git a/README.md b/README.md
index 30cbec017..6e0866206 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,15 @@ categories: {
   symbols: 'Symbols',
   flags: 'Flags',
   custom: 'Custom',
-}
+},
+skintones: {
+  1: 'Default Skin Tone',
+  2: 'Light Skin Tone',
+  3: 'Medium-Light Skin Tone',
+  4: 'Medium Skin Tone',
+  5: 'Medium-Dark Skin Tone',
+  6: 'Dark Skin Tone',
+},
 ```
 
 #### Sheet sizes