diff --git a/lib/ruby_ui/radio_button/radio_button.rb b/lib/ruby_ui/radio_button/radio_button.rb
index c57a4c58..a1b76f33 100644
--- a/lib/ruby_ui/radio_button/radio_button.rb
+++ b/lib/ruby_ui/radio_button/radio_button.rb
@@ -15,7 +15,10 @@ def default_attrs
           ruby_ui__form_field_target: "input",
           action: "change->ruby-ui--form-field#onInput invalid->ruby-ui--form-field#onInvalid"
         },
-        class: "h-4 w-4 p-0 border-primary rounded-full flex-none"
+        class: [
+          "h-4 w-4 p-0 border-primary rounded-full flex-none",
+          "disabled:cursor-not-allowed disabled:opacity-50"
+        ]
       }
     end
   end