diff --git a/sdk/ts/package.json b/sdk/ts/package.json
index de57003..b1f87f5 100644
--- a/sdk/ts/package.json
+++ b/sdk/ts/package.json
@@ -16,6 +16,6 @@
     "prepare": "npm run build"
   },
   "devDependencies": {
-    "typescript": "^4.0 || ^5.0"
+    "typescript": "5.9.3"
   }
 }