diff --git a/package-lock.json b/package-lock.json
index 358e75b..6ffb16c 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "@zemd/eslint-react": "2.0.5",
         "@zemd/tsconfig": "1.5.0",
         "eslint": "10.1.0",
-        "happy-dom": "20.8.4",
+        "happy-dom": "20.8.9",
         "husky": "9.1.7",
         "prettier": "3.8.1",
         "react": "19.2.4",
@@ -4605,9 +4605,9 @@
       "license": "ISC"
     },
     "node_modules/happy-dom": {
-      "version": "20.8.4",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.8.4.tgz",
-      "integrity": "sha512-GKhjq4OQCYB4VLFBzv8mmccUadwlAusOZOI7hC1D9xDIT5HhzkJK17c4el2f6R6C715P9xB4uiMxeKUa2nHMwQ==",
+      "version": "20.8.9",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.8.9.tgz",
+      "integrity": "sha512-Tz23LR9T9jOGVZm2x1EPdXqwA37G/owYMxRwU0E4miurAtFsPMQ1d2Jc2okUaSjZqAFz2oEn3FLXC5a0a+siyA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 153aa0c..527128c 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "@zemd/eslint-react": "2.0.5",
     "@zemd/tsconfig": "1.5.0",
     "eslint": "10.1.0",
-    "happy-dom": "20.8.4",
+    "happy-dom": "20.8.9",
     "husky": "9.1.7",
     "prettier": "3.8.1",
     "react": "19.2.4",