diff --git a/extensions/package.json b/extensions/package.json
index 75468b6..42e58c0 100644
--- a/extensions/package.json
+++ b/extensions/package.json
@@ -13,7 +13,7 @@
     "parallel-web": "^0.4.1",
     "tsx": "4.20.6",
     "typebox": "^1.1.31",
-    "typescript": "5.8.2",
+    "typescript": "5.9.3",
     "vscode-languageserver-protocol": "3.17.5"
   },
   "dependencies": {