diff --git a/src/lib/types.ts b/src/lib/types.ts
index e2a58fb9..106efc15 100644
--- a/src/lib/types.ts
+++ b/src/lib/types.ts
@@ -636,27 +636,27 @@ export type LinkableMarkProps = {
     /**
      * if set, the mark element will be wrapped in a <a> link element
      */
-    href: ConstantAccessor<string>;
+    href?: ConstantAccessor<string>;
     /**
      * the relationship of the target object to the link object (e.g. "noopener")
      * @see https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/a#rel
      */
-    rel: ConstantAccessor<string>;
+    rel?: ConstantAccessor<string>;
     /**
      * the link target mime type, e.g. "text/csv"
      * @see https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/a#type
      */
-    type: ConstantAccessor<string>;
+    type?: ConstantAccessor<string>;
     /**
      * the target of the link, e.g. "_blank" or "_self"
      * @see https://developer.mozilla.org/en-US/docs/Web/HTML/Reference/Elements/a#target
      */
-    target: ConstantAccessor<'_self' | '_blank' | '_parent' | '_top' | string>;
+    target?: ConstantAccessor<'_self' | '_blank' | '_parent' | '_top' | string>;
     /**
      * if set to true, the link will be downloaded instead of navigating to it
      * @see https://developer.mozilla.org/en-US/docs/Web/HTML/Element/a#download
      */
-    download: ConstantAccessor<boolean>;
+    download?: ConstantAccessor<boolean>;
     // allow data-sveltekit-* attributes on the link element, e.g. data-sveltekit-reload
     [key: `data-sveltekit-${string}`]: string | boolean;
 };