diff --git a/README.md b/README.md
index 5303d0b..091f983 100644
--- a/README.md
+++ b/README.md
@@ -66,5 +66,7 @@ primary:
 
 `hover (string)` Name of the colour pallete to use when the icon is hovered over
 
+`classes (string[])` Additional classes to add to the icon. This can cause Tailwind class collisions, so use with caution if at all.
+
 ## Reminders
 Remember to add `./config/packages/*.yaml` as a value in your Tailwind config content array if it does not already exist. This will ensure Tailwind classes inside of the config file get compiled.