diff --git a/package.json b/package.json
index 85f14ba..cdc7687 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "@types/node": "^24.7.1",
     "eslint": "^9.21.0",
     "jiti": "^2.4.2",
-    "tsdown": "0.15.6",
+    "tsdown": "0.15.9",
     "typescript": "^5.3.3",
     "vitest": "^3.2.4"
   },