diff --git a/package-lock.json b/package-lock.json
index 7d1f714..896bee3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -39,7 +39,7 @@
         "eslint-plugin-astro": "^3.1.0",
         "eslint-plugin-vue": "^10.11.0",
         "globals": "^17.12.0",
-        "happy-dom": "^20.11.1",
+        "happy-dom": "^21.0.4",
         "playwright": "^1.63.0",
         "prettier": "^3.9.0",
         "prettier-plugin-astro": "^1.0.1",
@@ -5959,9 +5959,9 @@
       }
     },
     "node_modules/happy-dom": {
-      "version": "20.11.1",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.11.1.tgz",
-      "integrity": "sha512-XSt8tMzbW9ymE7687xztkO1ckR7qJNQ3LywY9vlYGhGi3zXrGBHuUo2Cl1ztZaICW+1eAGdkLbj6iwVqDT33kg==",
+      "version": "21.0.4",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-21.0.4.tgz",
+      "integrity": "sha512-tFm+GaLBgo6o0awHnvHaNoraVo27qJ+2tZEtZ+cIa08hXbeitrxAJajLI05hsUy/2/YTKcUjQYzHe5mCcraLBw==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index a3b3f1f..e2d8036 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "eslint-plugin-astro": "^3.1.0",
     "eslint-plugin-vue": "^10.11.0",
     "globals": "^17.12.0",
-    "happy-dom": "^20.11.1",
+    "happy-dom": "^21.0.4",
     "playwright": "^1.63.0",
     "prettier": "^3.9.0",
     "prettier-plugin-astro": "^1.0.1",