diff --git a/index.d.ts b/index.d.ts
index 45150f2..f4e35c1 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -9,4 +9,7 @@ declare global {
   interface Window {
     AutoCheckElement: typeof AutoCheckElement
   }
-}
+  interface HTMLElementTagNameMap {
+    'auto-check': AutoCheckElement
+  }
+}
\ No newline at end of file