diff --git a/package-lock.json b/package-lock.json
index a20f8d1..43904f6 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19,7 +19,7 @@
         "@types/node": "^25.1.0",
         "@vitest/coverage-v8": "^4.0.18",
         "eslint": "^9.39.2",
-        "happy-dom": "^20.4.0",
+        "happy-dom": "^20.5.0",
         "typedoc": "^0.28.16",
         "typedoc-plugin-missing-exports": "^4.1.2",
         "typescript": "^5.9.3",
@@ -4740,9 +4740,9 @@
       "dev": true
     },
     "node_modules/happy-dom": {
-      "version": "20.4.0",
-      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.4.0.tgz",
-      "integrity": "sha512-RDeQm3dT9n0A5f/TszjUmNCLEuPnMGv3Tv4BmNINebz/h17PA6LMBcxJ5FrcqltNBMh9jA/8ufgDdBYUdBt+eg==",
+      "version": "20.5.0",
+      "resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.5.0.tgz",
+      "integrity": "sha512-VQe+Q5CYiGOgcCERXhcfNsbnrN92FDEKciMH/x6LppU9dd0j4aTjCTlqONFOIMcAm/5JxS3+utowbXV1OoFr+g==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/package.json b/package.json
index 6c219cf..aba586b 100644
--- a/package.json
+++ b/package.json
@@ -52,7 +52,7 @@
     "@types/node": "^25.1.0",
     "@vitest/coverage-v8": "^4.0.18",
     "eslint": "^9.39.2",
-    "happy-dom": "^20.4.0",
+    "happy-dom": "^20.5.0",
     "typedoc": "^0.28.16",
     "typedoc-plugin-missing-exports": "^4.1.2",
     "typescript": "^5.9.3",