diff --git a/.changeset/blue-dolls-melt.md b/.changeset/blue-dolls-melt.md
new file mode 100644
index 000000000000..a4d0c26d7961
--- /dev/null
+++ b/.changeset/blue-dolls-melt.md
@@ -0,0 +1,5 @@
+---
+"astro": patch
+---
+
+Updates the `HTMLAttributes` type exported from `astro` to allow data attributes
diff --git a/packages/astro/types.d.ts b/packages/astro/types.d.ts
index 7eaa4823c636..eaf3f30c6baf 100644
--- a/packages/astro/types.d.ts
+++ b/packages/astro/types.d.ts
@@ -4,11 +4,14 @@ import type { Simplify } from './dist/type-utils.js';
 
 /** Any supported HTML or SVG element name, as defined by the HTML specification */
 export type HTMLTag = keyof astroHTML.JSX.DefinedIntrinsicElements;
+
 /** The built-in attributes for any known HTML or SVG element name */
 export type HTMLAttributes<Tag extends HTMLTag> = Omit<
 	astroHTML.JSX.IntrinsicElements[Tag],
 	keyof Omit<AstroBuiltinAttributes, 'class:list'>
->;
+> & {
+	[key: string]: string | number | boolean | null | undefined;
+};
 
 /**
  * All the CSS properties available, as defined by the CSS specification