diff --git a/site/javascript/tutorials/eleventy-tsx/props/demos/package.json b/site/javascript/tutorials/eleventy-tsx/props/demos/package.json
index a6696ad50..317ceef81 100644
--- a/site/javascript/tutorials/eleventy-tsx/props/demos/package.json
+++ b/site/javascript/tutorials/eleventy-tsx/props/demos/package.json
@@ -17,7 +17,7 @@
 	},
 	"devDependencies": {
 		"@testing-library/dom": "^10.0.0",
-		"happy-dom": "^14.7.1",
+		"happy-dom": "^15.10.2",
 		"prettier": "^3.2.5",
 		"tsx": "^4.7.0",
 		"vitest": "^1.5.0"