diff --git a/build/media_source/templates/administrator/atum/scss/vendor/joomla-custom-elements/joomla-tab.scss b/build/media_source/templates/administrator/atum/scss/vendor/joomla-custom-elements/joomla-tab.scss
index e4dd67b7e07a4..62bc59a657453 100644
--- a/build/media_source/templates/administrator/atum/scss/vendor/joomla-custom-elements/joomla-tab.scss
+++ b/build/media_source/templates/administrator/atum/scss/vendor/joomla-custom-elements/joomla-tab.scss
@@ -44,7 +44,7 @@ joomla-tab {
       box-shadow: none;
 
       &:first-of-type,
-      &[aria-expanded=true]:first-of-type {
+      &[aria-selected=true]:first-of-type {
         border-start-start-radius: .25rem;
       }
 
@@ -52,7 +52,7 @@ joomla-tab {
         z-index: 1;
       }
 
-      &[aria-expanded=true],
+      &[aria-selected=true],
       &:focus,
       &:hover {
         color: $joomla-tab-btn-hvr;
@@ -76,7 +76,7 @@ joomla-tab {
         }
       }
 
-      &[aria-expanded=true] {
+      &[aria-selected=true] {
         font-weight: $font-weight-bold;
         background: $joomla-tab-btn-aria-exp-bg;
       }
@@ -96,7 +96,7 @@ joomla-tab {
     border: $joomla-tab-btn-region-border;
     border-top: 0;
 
-    &[aria-expanded=true],
+    &[aria-selected=true],
     &:hover,
     &:focus {
       color: var(--template-text-light);
@@ -154,7 +154,7 @@ joomla-tab[orientation=vertical] {
     > button[role=tab] {
       text-align: start;
 
-      &[aria-expanded=true] {
+      &[aria-selected=true] {
         color: $joomla-tablist-btn-aria-exp; // var(--template-text-light);
         background-color: $joomla-tablist-btn-aria-exp-bg; // var(--template-bg-dark-60);
       }
@@ -174,7 +174,7 @@ joomla-tab[orientation=vertical] {
       border-bottom: $joomla-tab-vert-border-bottom; // 1px solid $gray-300;
       box-shadow: none;
 
-      &[aria-expanded=true],
+      &[aria-selected=true],
       &:focus,
       &:hover {
         color: var(--template-text-light);
@@ -231,7 +231,7 @@ joomla-tab[view=accordion] {
       border-bottom: $joomla-tab-vert-border-bottom; // 1px solid $gray-300;
       box-shadow: none;
 
-      &[aria-expanded=true]::after,
+      &[aria-selected=true]::after,
       &:hover::after {
         position: absolute;
         top: auto;
@@ -261,7 +261,7 @@ joomla-tab[view=accordion] {
   }
 
   [active],
-  [aria-expanded=true] {
+  [aria-selected=true] {
     background-color: var(--body-bg);
   }
 
@@ -320,7 +320,7 @@ joomla-tab[view=accordion] {
         background-color: var(--btn-primary-bg);
         border: var(--btn-primary-border);
 
-        &[aria-expanded=true],
+        &[aria-selected=true],
         &:hover,
         &:focus {
           color: var(--btn-primary-color);
@@ -332,7 +332,7 @@ joomla-tab[view=accordion] {
     }
 
     [dir=rtl] joomla-tab {
-      div[role="tablist"] > button[role="tab"][aria-expanded="true"]::after {
+      div[role="tablist"] > button[role="tab"][aria-selected="true"]::after {
         right: auto;
         left: 0;
       }
diff --git a/package-lock.json b/package-lock.json
index a91a8a76aa9bc..33ad8f80cd0b1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -41,7 +41,7 @@
         "es-module-shims": "^1.10.1",
         "focus-visible": "^5.2.1",
         "hotkeys-js": "^3.13.9",
-        "joomla-ui-custom-elements": "^0.2.0",
+        "joomla-ui-custom-elements": "^0.4.1",
         "jquery": "^3.7.1",
         "jquery-migrate": "^3.5.2",
         "mark.js": "^8.11.1",
@@ -7097,9 +7097,9 @@
       }
     },
     "node_modules/joomla-ui-custom-elements": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/joomla-ui-custom-elements/-/joomla-ui-custom-elements-0.2.0.tgz",
-      "integrity": "sha512-Rgm5yjvYn3C9juR9QMU/8H4mBXtpayb6zfgA5uIx7EHgGjGQzk3njCykatC7mrcrIjp3Fei5hghP5nHpQxlbGg==",
+      "version": "0.4.1",
+      "resolved": "https://registry.npmjs.org/joomla-ui-custom-elements/-/joomla-ui-custom-elements-0.4.1.tgz",
+      "integrity": "sha512-hqmls4050GehK78WyIm+sPUEZSEbUgy9KqmJkzwqtRx+vQ0nf25K37xAgZwxMwxHX26Mjcx6vCyKM8XKhDnDdg==",
       "license": "GPL-2.0-or-later"
     },
     "node_modules/jquery": {
diff --git a/package.json b/package.json
index 8ec2a8c8eafe9..ef46cc2f14362 100644
--- a/package.json
+++ b/package.json
@@ -68,7 +68,7 @@
     "es-module-shims": "^1.10.1",
     "focus-visible": "^5.2.1",
     "hotkeys-js": "^3.13.9",
-    "joomla-ui-custom-elements": "^0.2.0",
+    "joomla-ui-custom-elements": "^0.4.1",
     "jquery": "^3.7.1",
     "jquery-migrate": "^3.5.2",
     "mark.js": "^8.11.1",