diff --git a/src/Umbraco.Web.UI.Client/package-lock.json b/src/Umbraco.Web.UI.Client/package-lock.json
index 463ad28783..59fd4bf9ac 100644
--- a/src/Umbraco.Web.UI.Client/package-lock.json
+++ b/src/Umbraco.Web.UI.Client/package-lock.json
@@ -14,7 +14,7 @@
 				"@umbraco-ui/uui-modal-container": "file:umbraco-ui-uui-modal-container-0.0.0.tgz",
 				"@umbraco-ui/uui-modal-dialog": "file:umbraco-ui-uui-modal-dialog-0.0.0.tgz",
 				"@umbraco-ui/uui-modal-sidebar": "file:umbraco-ui-uui-modal-sidebar-0.0.0.tgz",
-				"element-internals-polyfill": "^1.1.6",
+				"element-internals-polyfill": "^1.1.9",
 				"lit": "^2.3.1",
 				"openapi-typescript-fetch": "^1.1.3",
 				"router-slot": "^1.5.5",
@@ -11330,9 +11330,9 @@
 			"dev": true
 		},
 		"node_modules/element-internals-polyfill": {
-			"version": "1.1.6",
-			"resolved": "https://registry.npmjs.org/element-internals-polyfill/-/element-internals-polyfill-1.1.6.tgz",
-			"integrity": "sha512-PW63CzI6GKewCYfX7hZ5gFJO5uib+oAy/AwELrOEfyBI3SlYOXFjVhDEIxlg0CV4kIa4ixjO+5XFhP/Cx1Lurw=="
+			"version": "1.1.9",
+			"resolved": "https://registry.npmjs.org/element-internals-polyfill/-/element-internals-polyfill-1.1.9.tgz",
+			"integrity": "sha512-x/BjprDZeK8zClGvxobTFINZKXTPy1/DpbJMESCcRIA5I1+3bckxv3JXxKUeIEvv+RHV+LWlGCa7U2frP3waVw=="
 		},
 		"node_modules/element-resize-detector": {
 			"version": "1.2.4",
@@ -35194,9 +35194,9 @@
 			"dev": true
 		},
 		"element-internals-polyfill": {
-			"version": "1.1.6",
-			"resolved": "https://registry.npmjs.org/element-internals-polyfill/-/element-internals-polyfill-1.1.6.tgz",
-			"integrity": "sha512-PW63CzI6GKewCYfX7hZ5gFJO5uib+oAy/AwELrOEfyBI3SlYOXFjVhDEIxlg0CV4kIa4ixjO+5XFhP/Cx1Lurw=="
+			"version": "1.1.9",
+			"resolved": "https://registry.npmjs.org/element-internals-polyfill/-/element-internals-polyfill-1.1.9.tgz",
+			"integrity": "sha512-x/BjprDZeK8zClGvxobTFINZKXTPy1/DpbJMESCcRIA5I1+3bckxv3JXxKUeIEvv+RHV+LWlGCa7U2frP3waVw=="
 		},
 		"element-resize-detector": {
 			"version": "1.2.4",
diff --git a/src/Umbraco.Web.UI.Client/package.json b/src/Umbraco.Web.UI.Client/package.json
index f1525af203..1b25531746 100644
--- a/src/Umbraco.Web.UI.Client/package.json
+++ b/src/Umbraco.Web.UI.Client/package.json
@@ -37,7 +37,7 @@
 	},
 	"dependencies": {
 		"@umbraco-ui/uui": "^1.0.0-rc.3",
-		"element-internals-polyfill": "^1.1.6",
+		"element-internals-polyfill": "^1.1.9",
 		"lit": "^2.3.1",
 		"openapi-typescript-fetch": "^1.1.3",
 		"router-slot": "^1.5.5",