diff --git a/package-lock.json b/package-lock.json
index 8a57890ae8..4e85047a4b 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -70,7 +70,7 @@
         "@vitest/coverage-v8": "^5.0.5",
         "@vue/test-utils": "^2.5.1",
         "@vue/tsconfig": "^0.9.1",
-        "happy-dom": "^20.14.5",
+        "happy-dom": "^21.0.3",
         "mailpit-api": "^2.1.0",
         "openapi-typescript": "^7.13.0",
         "typescript": "^6.0.3",
@@ -10108,9 +10108,9 @@
       }
     },
     "node_modules/happy-dom": {
-      "version": "20.14.5",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.14.5.tgz",
-      "integrity": "sha512-x/RzkpWO40bTjIoT30iQtt64FLLmH/iRcUCN2X//bLx7H3ifkdfPXyqsro/OYtqzIAhiLMMA7mmiOR9C3NOKjQ==",
+      "version": "21.0.3",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-21.0.3.tgz",
+      "integrity": "sha512-PesNgu5BnIEmAwzKGewB3K1ORFeznFZJ4JrRz89ea1wkHnxskdpzX9sN/+zb4KO6k8oSMhyJSj/cwXAFrYBBNA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index fb85434c01..2420f24b73 100644
--- a/package.json
+++ b/package.json
@@ -92,7 +92,7 @@
     "@vitest/coverage-v8": "^5.0.5",
     "@vue/test-utils": "^2.5.1",
     "@vue/tsconfig": "^0.9.1",
-    "happy-dom": "^20.14.5",
+    "happy-dom": "^21.0.3",
     "mailpit-api": "^2.1.0",
     "openapi-typescript": "^7.13.0",
     "typescript": "^6.0.3",