diff --git a/package.json b/package.json
index c96d79eb..9194dd35 100644
--- a/package.json
+++ b/package.json
@@ -108,7 +108,7 @@
     "svelte": "^5.36.2",
     "svelte2tsx": "^0.7.35",
     "tsx": "^4.19.3",
-    "typescript": "~5.8.2",
+    "typescript": "~5.9.0",
     "typescript-eslint": "^8.28.0",
     "typescript-eslint-parser-for-extra-files": "^0.9.0"
   },