diff --git a/package-lock.json b/package-lock.json
index 9568ebc4c..43e1678b0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -32,7 +32,7 @@
         "@zamiell/typedoc-plugin-not-exported": "^0.2.0",
         "gettext-extractor": "^3.8.0",
         "gettext-parser": "^7.0.1",
-        "happy-dom": "^12.2.1",
+        "happy-dom": "^12.9.0",
         "sass": "^1.69.0",
         "tslib": "^2.6.2",
         "typedoc": "^0.25.1",
@@ -8508,9 +8508,9 @@
       "peer": true
     },
     "node_modules/happy-dom": {
-      "version": "12.2.1",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-12.2.1.tgz",
-      "integrity": "sha512-yIubME+FcwUuKjmiDlJdhEIax3UnZIweqn/E6AE2bJTIXJv4DP2/ULh0ZnhkCxP05SJsyG6CRFxM/r2HAuWesA==",
+      "version": "12.9.0",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-12.9.0.tgz",
+      "integrity": "sha512-Ap/bcno2k5316FYDqBJ2i0O1zS78W1jsNR4F/p2t3zdNoa+2H0k851RGef4STfIKdTwcQ/nk5Tx9d5BzQXfTrw==",
       "dev": true,
       "dependencies": {
         "css.escape": "^1.5.1",
diff --git a/package.json b/package.json
index 3bbfa4880..6c1536fae 100644
--- a/package.json
+++ b/package.json
@@ -78,7 +78,7 @@
     "@zamiell/typedoc-plugin-not-exported": "^0.2.0",
     "gettext-extractor": "^3.8.0",
     "gettext-parser": "^7.0.1",
-    "happy-dom": "^12.2.1",
+    "happy-dom": "^12.9.0",
     "sass": "^1.69.0",
     "tslib": "^2.6.2",
     "typedoc": "^0.25.1",