diff --git a/attrs/attrs.go b/attrs/attrs.go
index 611656e..d5ffe72 100644
--- a/attrs/attrs.go
+++ b/attrs/attrs.go
@@ -63,6 +63,8 @@ const (
 	Required       = "required"
 	Rows           = "rows"
 	Selected       = "selected"
+	Size           = "size"
+	Step           = "step"
 	Type           = "type"
 	Value          = "value"