diff --git a/package.json b/package.json
index 427aaaa5..0b6acace 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "eslint": "^8.40.0",
     "flat": "^6.0.1",
     "gray-matter": ">= 4.0",
-    "happy-dom": "^12.6.0",
+    "happy-dom": "^20.3.3",
     "http-server": "^14.1.1",
     "husky": "^9.1.7",
     "hyperlink": "^5.0.4",
diff --git a/yarn.lock b/yarn.lock
index 7b79e530..86b2013a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -975,7 +975,7 @@ __metadata:
     eslint: ^8.40.0
     flat: ^6.0.1
     gray-matter: ">= 4.0"
-    happy-dom: ^12.6.0
+    happy-dom: ^20.3.3
     http-server: ^14.1.1
     husky: ^9.1.7
     hyperlink: ^5.0.4
@@ -1329,6 +1329,15 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/node@npm:>=20.0.0":
+  version: 25.0.9
+  resolution: "@types/node@npm:25.0.9"
+  dependencies:
+    undici-types: ~7.16.0
+  checksum: 0dd245ed1823d32851007da980319af17f9794b0fe4b6b46093cee185e4c3ea033162238d2dc053b4474c1eeb534d47d2679a92907b5e7a27dac0938cb250c7a
+  languageName: node
+  linkType: hard
+
 "@types/normalize-package-data@npm:^2.4.0":
   version: 2.4.2
   resolution: "@types/normalize-package-data@npm:2.4.2"
@@ -1359,6 +1368,22 @@ __metadata:
   languageName: node
   linkType: hard
 
+"@types/whatwg-mimetype@npm:^3.0.2":
+  version: 3.0.2
+  resolution: "@types/whatwg-mimetype@npm:3.0.2"
+  checksum: 30e2599ae02c539a6dd08b58de255aad24a41cdabeebc0293814884f1301f1328443b9915f2e990e4f484fa7f226ca8718991b63d2d387287f898c36390ef856
+  languageName: node
+  linkType: hard
+
+"@types/ws@npm:^8.18.1":
+  version: 8.18.1
+  resolution: "@types/ws@npm:8.18.1"
+  dependencies:
+    "@types/node": "*"
+  checksum: 0331b14cde388e2805af66cad3e3f51857db8e68ed91e5b99750915e96fe7572e58296dc99999331bbcf08f0ff00a227a0bb214e991f53c2a5aca7b0e71173fa
+  languageName: node
+  linkType: hard
+
 "@typescript-eslint/eslint-plugin@npm:1 - 5, @typescript-eslint/eslint-plugin@npm:^5.59.1":
   version: 5.62.0
   resolution: "@typescript-eslint/eslint-plugin@npm:5.62.0"
@@ -3358,13 +3383,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"css.escape@npm:^1.5.1":
-  version: 1.5.1
-  resolution: "css.escape@npm:1.5.1"
-  checksum: f6d38088d870a961794a2580b2b2af1027731bb43261cfdce14f19238a88664b351cc8978abc20f06cc6bbde725699dec8deb6fe9816b139fc3f2af28719e774
-  languageName: node
-  linkType: hard
-
 "cssesc@npm:^3.0.0":
   version: 3.0.0
   resolution: "cssesc@npm:3.0.0"
@@ -5284,17 +5302,17 @@ __metadata:
   languageName: node
   linkType: hard
 
-"happy-dom@npm:^12.6.0":
-  version: 12.9.1
-  resolution: "happy-dom@npm:12.9.1"
+"happy-dom@npm:^20.3.3":
+  version: 20.3.3
+  resolution: "happy-dom@npm:20.3.3"
   dependencies:
-    css.escape: ^1.5.1
+    "@types/node": ">=20.0.0"
+    "@types/whatwg-mimetype": ^3.0.2
+    "@types/ws": ^8.18.1
     entities: ^4.5.0
-    iconv-lite: ^0.6.3
-    webidl-conversions: ^7.0.0
-    whatwg-encoding: ^2.0.0
     whatwg-mimetype: ^3.0.0
-  checksum: 02e7f73199cda296ede1479559166ff1d2b04a4169679fa12d4b7c3b90caefc571c18ca6664bdeb1054b6d22465b2c10e78b3ddfc5676e87f7bd7b16b9afb00b
+    ws: ^8.18.3
+  checksum: a230c18a9fab399a34f64b1e865a8fde6c41519b2bb44bfc865595eefd42e26dcc7a34cda8dfda84e7aad1b4bed26c44b110e7dd4f64722019753f886aed9ed0
   languageName: node
   linkType: hard
 
@@ -5637,7 +5655,7 @@ __metadata:
   languageName: node
   linkType: hard
 
-"iconv-lite@npm:0.6.3, iconv-lite@npm:^0.6.2, iconv-lite@npm:^0.6.3":
+"iconv-lite@npm:0.6.3, iconv-lite@npm:^0.6.2":
   version: 0.6.3
   resolution: "iconv-lite@npm:0.6.3"
   dependencies:
@@ -10433,6 +10451,13 @@ __metadata:
   languageName: node
   linkType: hard
 
+"undici-types@npm:~7.16.0":
+  version: 7.16.0
+  resolution: "undici-types@npm:7.16.0"
+  checksum: 1ef68fc6c5bad200c8b6f17de8e5bc5cfdcadc164ba8d7208cd087cfa8583d922d8316a7fd76c9a658c22b4123d3ff847429185094484fbc65377d695c905857
+  languageName: node
+  linkType: hard
+
 "union@npm:~0.5.0":
   version: 0.5.0
   resolution: "union@npm:0.5.0"
@@ -10936,13 +10961,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"webidl-conversions@npm:^7.0.0":
-  version: 7.0.0
-  resolution: "webidl-conversions@npm:7.0.0"
-  checksum: f05588567a2a76428515333eff87200fae6c83c3948a7482ebb109562971e77ef6dc49749afa58abb993391227c5697b3ecca52018793e0cb4620a48f10bd21b
-  languageName: node
-  linkType: hard
-
 "whatwg-encoding@npm:^1.0.5":
   version: 1.0.5
   resolution: "whatwg-encoding@npm:1.0.5"
@@ -11316,6 +11334,21 @@ __metadata:
   languageName: node
   linkType: hard
 
+"ws@npm:^8.18.3":
+  version: 8.19.0
+  resolution: "ws@npm:8.19.0"
+  peerDependencies:
+    bufferutil: ^4.0.1
+    utf-8-validate: ">=5.0.2"
+  peerDependenciesMeta:
+    bufferutil:
+      optional: true
+    utf-8-validate:
+      optional: true
+  checksum: 7a426122c373e053a65a2affbcdcdbf8f643ba0265577afd4e08595397ca244c05de81570300711e2363a9dab5aea3ae644b445bc7468b1ebbb51bfe2efb20e1
+  languageName: node
+  linkType: hard
+
 "xml-name-validator@npm:^3.0.0":
   version: 3.0.0
   resolution: "xml-name-validator@npm:3.0.0"