diff --git a/index.d.ts b/index.d.ts
index d277045..d9dad74 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -4,4 +4,7 @@ declare global {
   interface Window {
     TabContainerElement: typeof TabContainerElement
   }
-}
+  interface HTMLElementTagNameMap {
+    'tab-container': TabContainerElement
+  }
+}
\ No newline at end of file