diff --git a/package.json b/package.json
index ddadf13..04c4e20 100644
--- a/package.json
+++ b/package.json
@@ -157,7 +157,7 @@
     "editorconfig": "3.0.1",
     "eslint": "9.31.0",
     "growl": "1.10.5",
-    "happy-dom": "18.0.1",
+    "happy-dom": "20.0.4",
     "husky": "9.1.7",
     "is-ci": "4.1.0",
     "node-notifier": "10.0.1",
diff --git a/yarn.lock b/yarn.lock
index 97bbff2..2ba8182 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1681,7 +1681,7 @@ __metadata:
     editorconfig: "npm:3.0.1"
     eslint: "npm:9.31.0"
     growl: "npm:1.10.5"
-    happy-dom: "npm:18.0.1"
+    happy-dom: "npm:20.0.4"
     husky: "npm:9.1.7"
     is-ci: "npm:4.1.0"
     node-notifier: "npm:10.0.1"
@@ -6050,14 +6050,14 @@ __metadata:
   languageName: node
   linkType: hard
 
-"happy-dom@npm:18.0.1":
-  version: 18.0.1
-  resolution: "happy-dom@npm:18.0.1"
+"happy-dom@npm:20.0.4":
+  version: 20.0.4
+  resolution: "happy-dom@npm:20.0.4"
   dependencies:
     "@types/node": "npm:^20.0.0"
     "@types/whatwg-mimetype": "npm:^3.0.2"
     whatwg-mimetype: "npm:^3.0.0"
-  checksum: 10/27f6638d7b8bc67f97ddde7f004e47785ae1487e14065d7c6119adbb9ba7d8a53935d5714d37d9f60efef7f9b180a41c2b7fbbdffcea57b6d04060360a1a1d03
+  checksum: 10/30cac49405ddb92b19235c6923caeca1aee36b2f8d43dc77db54563f6853399d26212700675aa8c4b6419f750d7036d92155af470c7c7812caae0f628294f7b7
   languageName: node
   linkType: hard