diff --git a/lib/package.json b/lib/package.json
index 5b146292..09bb556c 100644
--- a/lib/package.json
+++ b/lib/package.json
@@ -74,7 +74,7 @@
     "eslint-plugin-react-refresh": "^0.4.26",
     "eslint-plugin-security": "^3.0.1",
     "globals": "^17.0.0",
-    "happy-dom": "^20.3.4",
+    "happy-dom": "^20.4.0",
     "postcss": "^8.4.21",
     "prettier": "^3.8.1",
     "react": "^18.3.1",
diff --git a/package-lock.json b/package-lock.json
index 3d13ebf9..38e98f71 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -195,7 +195,7 @@
         "eslint-plugin-react-refresh": "^0.4.26",
         "eslint-plugin-security": "^3.0.1",
         "globals": "^17.0.0",
-        "happy-dom": "^20.3.4",
+        "happy-dom": "^20.4.0",
         "postcss": "^8.4.21",
         "prettier": "^3.8.1",
         "react": "^18.3.1",
@@ -8848,9 +8848,9 @@
       "license": "MIT"
     },
     "node_modules/happy-dom": {
-      "version": "20.3.4",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.3.4.tgz",
-      "integrity": "sha512-rfbiwB6OKxZFIFQ7SRnCPB2WL9WhyXsFoTfecYgeCeFSOBxvkWLaXsdv5ehzJrfqwXQmDephAKWLRQoFoJwrew==",
+      "version": "20.4.0",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.4.0.tgz",
+      "integrity": "sha512-RDeQm3dT9n0A5f/TszjUmNCLEuPnMGv3Tv4BmNINebz/h17PA6LMBcxJ5FrcqltNBMh9jA/8ufgDdBYUdBt+eg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {