diff --git a/package-lock.json b/package-lock.json
index dbd5e8a..258abce 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -23,7 +23,7 @@
                 "eslint-plugin-svelte": "^3.19.0",
                 "fast-check": "^4.8.0",
                 "globals": "^17.6.0",
-                "happy-dom": "^20.10.2",
+                "happy-dom": "^20.10.3",
                 "jsdom": "^29.1.1",
                 "prettier": "^3.8.4",
                 "prettier-plugin-svelte": "^4.1.0",
@@ -3699,9 +3699,9 @@
             "license": "ISC"
         },
         "node_modules/happy-dom": {
-            "version": "20.10.2",
-            "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.10.2.tgz",
-            "integrity": "sha512-5p9Sxis3eowDJKqx90QCsgbNA02XXqJ59NOHvD4V6cxp+rP4d/xOyVx7uY3hS8hiUbY1VeiFH8lbJ81AyuDVLQ==",
+            "version": "20.10.3",
+            "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.10.3.tgz",
+            "integrity": "sha512-Hjdiy8RziuCcn5z04QI/rlsNuQoG8P0xxjgvsSMpi89cvIXIOcucQtiHS1yHSShxoBcSCeYqAskINmTiy/mlfw==",
             "dev": true,
             "license": "MIT",
             "dependencies": {
diff --git a/package.json b/package.json
index 660f990..f032b63 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
         "eslint-plugin-svelte": "^3.19.0",
         "fast-check": "^4.8.0",
         "globals": "^17.6.0",
-        "happy-dom": "^20.10.2",
+        "happy-dom": "^20.10.3",
         "jsdom": "^29.1.1",
         "prettier": "^3.8.4",
         "prettier-plugin-svelte": "^4.1.0",