diff --git a/package.json b/package.json
index 20fee9a..757ebf2 100644
--- a/package.json
+++ b/package.json
@@ -174,7 +174,7 @@
     "eslint": "9.39.2",
     "globals": "17.2.0",
     "growl": "1.10.5",
-    "happy-dom": "20.3.9",
+    "happy-dom": "20.4.0",
     "husky": "9.1.7",
     "is-ci": "4.1.0",
     "node-notifier": "10.0.1",
diff --git a/yarn.lock b/yarn.lock
index 9c4326e..3b429ee 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1968,7 +1968,7 @@ __metadata:
     globals: "npm:17.2.0"
     grapheme-splitter: "npm:1.0.4"
     growl: "npm:1.10.5"
-    happy-dom: "npm:20.3.9"
+    happy-dom: "npm:20.4.0"
     husky: "npm:9.1.7"
     is-ci: "npm:4.1.0"
     micromark-util-character: "npm:2.1.1"
@@ -6161,9 +6161,9 @@ __metadata:
   languageName: node
   linkType: hard
 
-"happy-dom@npm:20.3.9":
-  version: 20.3.9
-  resolution: "happy-dom@npm:20.3.9"
+"happy-dom@npm:20.4.0":
+  version: 20.4.0
+  resolution: "happy-dom@npm:20.4.0"
   dependencies:
     "@types/node": "npm:>=20.0.0"
     "@types/whatwg-mimetype": "npm:^3.0.2"
@@ -6171,7 +6171,7 @@ __metadata:
     entities: "npm:^4.5.0"
     whatwg-mimetype: "npm:^3.0.0"
     ws: "npm:^8.18.3"
-  checksum: 10/7f184d3229dbc8c9010f714725dcca275e3714155952ff6f3633e83df105b2012c7ffc80759f27ac00bb2a37b2a6cd88a28e06a8ca9e14edc501378a9326f72d
+  checksum: 10/5e7e8ceb2e530da4b7c71671d5549468c6a8aa2273f3f2277f892da45fff76e06c1b2ebd7e7f1c5feb94b0a904a2a1966f1eaaf94091a50a70988118b76a193a
   languageName: node
   linkType: hard