diff --git a/package-lock.json b/package-lock.json
index 3be21ab6..74d072a1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -33,7 +33,7 @@
         "@vue/test-utils": "^1.3.6",
         "@vue/tsconfig": "^0.5.1",
         "eslint-plugin-chai-friendly": "^1.0.1",
-        "happy-dom": "^17.4.7",
+        "happy-dom": "^17.5.6",
         "typescript": "^5.8.3",
         "vite": "^6.3.5",
         "vitest": "^3.0.2"
@@ -6655,9 +6655,9 @@
       "peer": true
     },
     "node_modules/happy-dom": {
-      "version": "17.4.7",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-17.4.7.tgz",
-      "integrity": "sha512-NZypxadhCiV5NT4A+Y86aQVVKQ05KDmueja3sz008uJfDRwz028wd0aTiJPwo4RQlvlz0fznkEEBBCHVNWc08g==",
+      "version": "17.5.6",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-17.5.6.tgz",
+      "integrity": "sha512-B4U6jKuiizwCJ2WP0YreQmRdeBrHKOXhpz7YUbbwdSAKfWEhdG4UfWZOZTZ5Oejs/9yJtk7xmbfp8YdVL9LVFA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index e1ad038c..616d58da 100644
--- a/package.json
+++ b/package.json
@@ -20,7 +20,7 @@
     "@vue/test-utils": "^1.3.6",
     "@vue/tsconfig": "^0.5.1",
     "eslint-plugin-chai-friendly": "^1.0.1",
-    "happy-dom": "^17.4.7",
+    "happy-dom": "^17.5.6",
     "typescript": "^5.8.3",
     "vite": "^6.3.5",
     "vitest": "^3.0.2"