diff --git a/app/package.json b/app/package.json
index 95210ad8..be42b498 100644
--- a/app/package.json
+++ b/app/package.json
@@ -68,7 +68,7 @@
   },
   "devDependencies": {
     "@tailwindcss/vite": "^4.1.10",
-    "@types/jsdom": "^21.1.7",
+    "@types/jsdom": "^28.0.0",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",
     "@types/showdown": "^2.0.6",