diff --git a/packages/test-suite/package.json b/packages/test-suite/package.json
index 6675c1e..f8d880c 100644
--- a/packages/test-suite/package.json
+++ b/packages/test-suite/package.json
@@ -55,7 +55,7 @@
   },
   "devDependencies": {
     "dotenv-cli": "^11.0.0",
-    "tsdown": "^0.11.9",
+    "tsdown": "^0.18.4",
     "typescript": "^5.8.3",
     "vitest": "^3.1.3"
   },