diff --git a/package.json b/package.json
index 6bdb13a..0df17a8 100644
--- a/package.json
+++ b/package.json
@@ -63,7 +63,7 @@
     "oxfmt": "^0.28.0",
     "oxlint": "^1.43.0",
     "publint": "^0.3.15",
-    "tsdown": "^0.20.3",
+    "tsdown": "^0.21.0",
     "typescript": "^5.9.3",
     "ultracite": "7.1.5"
   },