diff --git a/package.json b/package.json
index 05fde29..1ec08fc 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
     "@vitest/browser-playwright": "^4.0.15",
     "@vitest/coverage-v8": "4.0.17",
     "codemirror": "^6.0.2",
-    "jsdom": "^27.3.0",
+    "jsdom": "^29.0.0",
     "playwright": "^1.57.0",
     "typescript": "^5.9.3",
     "vite": "^8.0.0",