diff --git a/package-lock.json b/package-lock.json
index 14f9d55f..9d2bbcc4 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,7 +27,7 @@
         "@vue/tsconfig": "^0.8.1",
         "gettext-extractor": "^4.0.5",
         "gettext-parser": "^9.0.0",
-        "happy-dom": "^20.1.0",
+        "happy-dom": "^20.3.1",
         "sass": "^1.97.2",
         "typedoc": "^0.28.15",
         "typescript": "^5.9.3",
@@ -5676,9 +5676,9 @@
       "license": "MIT"
     },
     "node_modules/happy-dom": {
-      "version": "20.1.0",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.1.0.tgz",
-      "integrity": "sha512-ebvqjBqzenBk2LjzNEAzoj7yhw7rW/R2/wVevMu6Mrq3MXtcI/RUz4+ozpcOcqVLEWPqLfg2v9EAU7fFXZUUJw==",
+      "version": "20.3.1",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.3.1.tgz",
+      "integrity": "sha512-tLvsizNno05Hij0PoB0QN/S8xf0YU2AGvO11/JlJDw5McA/gzyn0Ni1RwbTI1/zteUbOekJH0t6q8HFvjbxsGg==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index d430db1c..e73eb336 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "@vue/tsconfig": "^0.8.1",
     "gettext-extractor": "^4.0.5",
     "gettext-parser": "^9.0.0",
-    "happy-dom": "^20.1.0",
+    "happy-dom": "^20.3.1",
     "sass": "^1.97.2",
     "typedoc": "^0.28.15",
     "typescript": "^5.9.3",