diff --git a/package.json b/package.json
index ead1ec062..24e42f298 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "eslint-plugin-prettier": "^5.2.1",
     "eslint-plugin-vue": "^9.32.0",
     "globals": "^15.14.0",
-    "happy-dom": "^15.11.7",
+    "happy-dom": "^16.2.9",
     "mutationobserver-shim": "^0.3.7",
     "portal-vue": "^3.0.0",
     "prettier": "^3.4.2",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index 755398343..77fe7aa82 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -136,8 +136,8 @@ importers:
         specifier: ^15.14.0
         version: 15.14.0
       happy-dom:
-        specifier: ^15.11.7
-        version: 15.11.7
+        specifier: ^16.2.9
+        version: 16.2.9
       mutationobserver-shim:
         specifier: ^0.3.7
         version: 0.3.7
@@ -170,7 +170,7 @@ importers:
         version: 6.0.5(@types/node@22.10.2)(jiti@2.4.2)(sass@1.83.0)
       vitest:
         specifier: ^2.1.8
-        version: 2.1.8(@types/node@22.10.2)(happy-dom@15.11.7)(sass@1.83.0)
+        version: 2.1.8(@types/node@22.10.2)(happy-dom@16.2.9)(sass@1.83.0)
       vue-tsc:
         specifier: ^2.2.0
         version: 2.2.0(typescript@5.7.2)
@@ -1685,8 +1685,8 @@ packages:
   graphemer@1.4.0:
     resolution: {integrity: sha512-EtKwoO6kxCL9WO5xipiHTZlSzBm7WLT627TqC/uVRd0HKmq8NXyebnNYxDoBi7wt8eTWrUrKXCOVaFq9x1kgag==}
 
-  happy-dom@15.11.7:
-    resolution: {integrity: sha512-KyrFvnl+J9US63TEzwoiJOQzZBJY7KgBushJA8X61DMbNsH+2ONkDuLDnCnwUiPTF42tLoEmrPyoqbenVA5zrg==}
+  happy-dom@16.2.9:
+    resolution: {integrity: sha512-WlBDENS5IsffAY+ROmKId2Exgyo92oD+c26xodHftmU+5FPx/DqdL0T30RROewtE8Us5EN5qvVuHUieVuK7t8Q==}
     engines: {node: '>=18.0.0'}
 
   has-flag@4.0.0:
@@ -4102,9 +4102,8 @@ snapshots:
 
   graphemer@1.4.0: {}
 
-  happy-dom@15.11.7:
+  happy-dom@16.2.9:
     dependencies:
-      entities: 4.5.0
       webidl-conversions: 7.0.0
       whatwg-mimetype: 3.0.0
 
@@ -4769,7 +4768,7 @@ snapshots:
       jiti: 2.4.2
       sass: 1.83.0
 
-  vitest@2.1.8(@types/node@22.10.2)(happy-dom@15.11.7)(sass@1.83.0):
+  vitest@2.1.8(@types/node@22.10.2)(happy-dom@16.2.9)(sass@1.83.0):
     dependencies:
       '@vitest/expect': 2.1.8
       '@vitest/mocker': 2.1.8(vite@5.4.11(@types/node@22.10.2)(sass@1.83.0))
@@ -4793,7 +4792,7 @@ snapshots:
       why-is-node-running: 2.3.0
     optionalDependencies:
       '@types/node': 22.10.2
-      happy-dom: 15.11.7
+      happy-dom: 16.2.9
     transitivePeerDependencies:
       - less
       - lightningcss