diff --git a/package-lock.json b/package-lock.json
index a377e08..e283dc9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
         "eslint": "^10.1.0",
         "eslint-plugin-vue": "^10.8.0",
         "globals": "^17.4.0",
-        "happy-dom": "^20.7.0",
+        "happy-dom": "^21.0.4",
         "pixelmatch": "^8.0.0",
         "pngjs": "^7.0.0",
         "postcss": "^8.5.6",
@@ -2650,9 +2650,9 @@
       }
     },
     "node_modules/happy-dom": {
-      "version": "20.14.5",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.14.5.tgz",
-      "integrity": "sha512-x/RzkpWO40bTjIoT30iQtt64FLLmH/iRcUCN2X//bLx7H3ifkdfPXyqsro/OYtqzIAhiLMMA7mmiOR9C3NOKjQ==",
+      "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 286deb9..719e0ab 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "eslint": "^10.1.0",
     "eslint-plugin-vue": "^10.8.0",
     "globals": "^17.4.0",
-    "happy-dom": "^20.7.0",
+    "happy-dom": "^21.0.4",
     "pixelmatch": "^8.0.0",
     "pngjs": "^7.0.0",
     "postcss": "^8.5.6",