diff --git a/src/component/accordion/style/_module.scss b/src/component/accordion/style/_module.scss
index c0c19acc9..3dfee26be 100644
--- a/src/component/accordion/style/_module.scss
+++ b/src/component/accordion/style/_module.scss
@@ -21,6 +21,10 @@
     line-height: unset;
   }
 
+  &:focus-within {
+    @include z-index(over);
+  }
+
   &__btn {
     @include _build-link-base;
     @include _link-display(flex);