diff --git a/web/package-lock.json b/web/package-lock.json
index 78ee584..c52007f 100644
--- a/web/package-lock.json
+++ b/web/package-lock.json
@@ -17,7 +17,7 @@
 				"@types/react-dom": "19.3.0",
 				"@vitejs/plugin-react": "6.1.2",
 				"@vitest/coverage-v8": "5.0.3",
-				"happy-dom": "20.14.6",
+				"happy-dom": "21.0.3",
 				"typescript": "7.0.2",
 				"vite": "8.3.4",
 				"vitest": "5.0.3"
@@ -1244,9 +1244,9 @@
 			}
 		},
 		"node_modules/happy-dom": {
-			"version": "20.14.6",
-			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-20.14.6.tgz",
-			"integrity": "sha512-5DDsf4QmEIlRL6NkCv/fxSjYHHkZceL/IaYQdJc2h3G7DRTEai++VTjbfL0LB9geW2VrA3+vrjF3Efx+OTtX0Q==",
+			"version": "21.0.3",
+			"resolved": "https://registry.npmjs.org/happy-dom/-/happy-dom-21.0.3.tgz",
+			"integrity": "sha512-PesNgu5BnIEmAwzKGewB3K1ORFeznFZJ4JrRz89ea1wkHnxskdpzX9sN/+zb4KO6k8oSMhyJSj/cwXAFrYBBNA==",
 			"dev": true,
 			"license": "MIT",
 			"dependencies": {
diff --git a/web/package.json b/web/package.json
index 4a176da..8c2ee03 100644
--- a/web/package.json
+++ b/web/package.json
@@ -22,7 +22,7 @@
 		"@types/react-dom": "19.3.0",
 		"@vitejs/plugin-react": "6.1.2",
 		"@vitest/coverage-v8": "5.0.3",
-		"happy-dom": "20.14.6",
+		"happy-dom": "21.0.3",
 		"typescript": "7.0.2",
 		"vite": "8.3.4",
 		"vitest": "5.0.3"