diff --git a/submit-web/package-lock.json b/submit-web/package-lock.json
index 7d5d1dcac..cf6279eac 100644
--- a/submit-web/package-lock.json
+++ b/submit-web/package-lock.json
@@ -64,7 +64,7 @@
         "eslint": "^8.57.0",
         "eslint-plugin-react-hooks": "^4.6.0",
         "eslint-plugin-react-refresh": "^0.4.6",
-        "happy-dom": "^20.11.0",
+        "happy-dom": "^21.0.4",
         "jsdom": "^26.1.0",
         "nyc": "^17.1.0",
         "prettier": "^3.3.3",
@@ -5473,10 +5473,11 @@
       "dev": true
     },
     "node_modules/happy-dom": {
-      "version": "20.11.0",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.11.0.tgz",
-      "integrity": "sha512-XogN4asPd1a56di9prVG6bZxteNcXsZxxKmAvcEfc5Px5Ca2hMyMgk8wvqK2K1V8zXg40j9VANXsDaJYh9DeNA==",
+      "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": {
         "@types/node": ">=20.0.0",
         "@types/whatwg-mimetype": "^3.0.2",
diff --git a/submit-web/package.json b/submit-web/package.json
index e3113d0f6..893f1d17c 100644
--- a/submit-web/package.json
+++ b/submit-web/package.json
@@ -72,7 +72,7 @@
     "eslint": "^8.57.0",
     "eslint-plugin-react-hooks": "^4.6.0",
     "eslint-plugin-react-refresh": "^0.4.6",
-    "happy-dom": "^20.11.0",
+    "happy-dom": "^21.0.4",
     "jsdom": "^26.1.0",
     "nyc": "^17.1.0",
     "prettier": "^3.3.3",