diff --git a/elements/index.d.ts b/elements/index.d.ts
index 4668d190f9..d57d97ad28 100644
--- a/elements/index.d.ts
+++ b/elements/index.d.ts
@@ -478,6 +478,7 @@ export interface HTMLAttributes<T extends EventTarget> extends AriaAttributes, D
 	hidden?: boolean | undefined | null;
 	id?: string | undefined | null;
 	lang?: string | undefined | null;
+	part?: string | undefined | null;
 	placeholder?: string | undefined | null;
 	slot?: string | undefined | null;
 	spellcheck?: Booleanish | undefined | null;